See Prince Louis’ birth certificate — and his dad’s signature!

He’s official! The birth certificate of Prince Louis has been made public — and it features his proud father’s signature. 

The document lists the newborn’s name as His Royal Highness Prince Louis Arthur Charles of Cambridge. Louis (pronounced Louie) made his debut on Monday, April 23, in the Lindo Wing of St. Mary’s Hospital. He weighed in at 8 pounds, 7 ounces. Unlike his siblings Prince George, 4, and Princess Charlotte, 2, Louis’ birth certificate is typed and not handwritten. 

Both Dad, 35, andDuchess Kate, 36, listed their occupations as Prince and Princess of the United Kingdom.

Prince Williamsigned the paper at his Kensington Palace residence on Tuesday, May 1. It was witnessed by Westminster City Council registrar Patricia Gordon. 

41 PHOTOS
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Duchess Kate gives birth to baby No. 3! All the photos from the big day
Britain's Prince William, Duke of Cambridge (L) and Britain's Catherine, Duchess of Cambridge show their newly-born son, their third child, to the media outside the Lindo Wing at St Mary's Hospital in central London, on April 23, 2018. (Photo by Daniel LEAL-OLIVAS / AFP) (Photo credit should read DANIEL LEAL-OLIVAS/AFP/Getty Images)
LONDON, ENGLAND - APRIL 23: Catherine, Duchess of Cambridge and Prince William, Duke of Cambridge depart the Lindo Wing with their newborn son at St Mary's Hospital on April 23, 2018 in London, England. The Duchess safely delivered a son at 11:01 am, weighing 8lbs 7oz, who will be fifth in line to the throne. (Photo by Karwai Tang/WireImage)
LONDON, ENGLAND - APRIL 23: Catherine, Duchess of Cambridge and Prince William, Duke of Cambridge depart the Lindo Wing with their newborn son at St Mary's Hospital on April 23, 2018 in London, England. The Duchess safely delivered a boy at 11:01 am, weighing 8lbs 7oz, who will be fifth in line to the throne. (Photo by Samir Hussein/WireImage)
The Duke and Duchess of Cambridge and their newborn son outside the Lindo Wing at St Mary's Hospital in Paddington, London. (Photo by John Stillwell/PA Images via Getty Images)
LONDON, ENGLAND - APRIL 23: Catherine, Duchess of Cambridge departs the Lindo Wing with her newborn son at St Mary's Hospital on April 23, 2018 in London, England. The Duchess safely delivered a boy at 11:01 am, weighing 8lbs 7oz, who will be fifth in line to the throne. (Photo by Chris Jackson/Getty Images)
Britain's Catherine, Duchess of Cambridge holds her newly-born son as he's presented to the press outside the Lindo Wing at St Mary's Hospital in central London, on April 23, 2018. (Photo by Daniel LEAL-OLIVAS / AFP) (Photo credit should read DANIEL LEAL-OLIVAS/AFP/Getty Images)
Britain's Prince William, Duke of Cambridge and Britain's Catherine, Duchess of Cambridge show their newly-born son, their third child, to the media outside the Lindo Wing at St Mary's Hospital in central London, on April 23, 2018. Photo by Daniel LEAL-OLIVAS / AFP 
Britain's Prince William, Duke of Cambridge and Britain's Catherine, Duchess of Cambridge show their newly-born son, their third child, to the media outside the Lindo Wing at St Mary's Hospital in central London, on April 23, 2018. (Photo by Daniel LEAL-OLIVAS / AFP) 
The newborn son of Prince William, Duke of Cambridge and Catherine, Duchess of Cambridge as they depart the Lindo Wing at St Mary's Hospital on April 23, 2018 in London, England. The Duchess safely delivered a boy at 11:01 am, weighing 8lbs 7oz, who will be fifth in line to the throne. (Photo by Chris Jackson/Getty Images)
The newborn son of Prince William, Duke of Cambridge and Catherine, Duchess of Cambridge as they depart the Lindo Wing at St Mary's Hospital on April 23, 2018 in London, England. The Duchess safely delivered a boy at 11:01 am, weighing 8lbs 7oz, who will be fifth in line to the throne. (Photo by Chris Jackson/Getty Images)
Britain's Prince William, Duke of Cambridge and Britain's Catherine, Duchess of Cambridge show their newly-born son, their third child, to the media outside the Lindo Wing at St Mary's Hospital in central London, on April 23, 2018. (Photo by DANIEL LEAL-OLIVAS / AFP) 
The Duchess of Cambridge with her newborn son outside the Lindo Wing at St Mary's Hospital in Paddington, London. (Photo by John Stillwell/PA Images via Getty Images)
Britain's Prince William, Duke of Cambridge and Britain's Catherine, Duchess of Cambridge show their newly-born son, their third child, to the media outside the Lindo Wing at St Mary's Hospital in central London, on April 23, 2018. (Photo by Isabel INFANTES / AFP)
The Duchess of Cambridge and her newborn son outside the Lindo Wing at St Mary's Hospital in Paddington, London. (Photo by Dominic Lipinski/PA Images via Getty Images)
Britain's Prince William, Duke of Cambridge and Britain's Catherine, Duchess of Cambridge show their newly-born son, their third child, to the media outside the Lindo Wing at St Mary's Hospital in central London, on April 23, 2018. (Photo by Ben STANSALL / AFP) (Photo credit should read BEN STANSALL/AFP/Getty Images)
Britain's Prince William, Duke of Cambridge and Britain's Catherine, Duchess of Cambridge (R) show their newly-born son, their third child, to the media outside the Lindo Wing at St Mary's Hospital in central London, on April 23, 2018. (Photo by Ben STANSALL / AFP) 
Catherine, Duchess of Cambridge and Prince William, Duke of Cambridge depart the Lindo Wing with their newborn son at St Mary's Hospital on April 23, 2018 in London, England. The Duchess safely delivered a son at 11:01 am, weighing 8lbs 7oz, who will be fifth in line to the throne. (Photo by Mike Marsland/Mike Marsland/ WireImage)
Catherine, Duchess of Cambridge and Prince William, Duke of Cambridge depart the Lindo Wing with their newborn son at St Mary's Hospital on April 23, 2018 in London, England. The Duchess safely delivered a son at 11:01 am, weighing 8lbs 7oz, who will be fifth in line to the throne. (Photo by Mike Marsland/Mike Marsland/ WireImage)
Britain's Prince William arrives at the Lindo Wing of St Mary's Hospital with his children Prince George and Princess Charlotte after his wife Catherine, the Duchess of Cambridge, gave birth to a son, in London, April 23, 2018. (REUTERS/Henry Nicholls)
LONDON, ENGLAND - APRIL 23: Prince William, Duke of Cambridge arrives with Prince George and Princess Charlotte at the Lindo Wing after Catherine, Duchess of Cambridge gave birth to their son at St Mary's Hospital on April 23, 2018 in London, England. The Duchess safely delivered a boy at 11:01 am, weighing 8lbs 7oz, who will be fifth in line to the throne. (Photo by Steve Back/Getty Images)
Princess Charlotte of Cambridge (L) turns to wave at the media as she is led in with her brother Prince George of Cambridge (R) by their father Britain's Prince William, Duke of Cambridge, (C) at the Lindo Wing of St Mary's Hospital in central London, on April 23, 2018, to visit Catherine, Duchess of Cambridge, and their new-born brother, the Duke and Duchess's third child. - Kate, the wife of Britain's Prince William, has given birth to a baby son, Kensington Palace announced Monday. 'Her Royal Highness The Duchess of Cambridge was safely delivered of a son at 11:01 (1001 GMT),' the palace said in a statement. The baby boy weighs eight pounds and seven ounces (3.8 kilogrammes). (Photo by Ben STANSALL / AFP) (Photo credit should read BEN STANSALL/AFP/Getty Images)
LONDON, ENGLAND - APRIL 23: Prince William, Duke of Cambridge and Princess Charlotte arrive with Prince George at the Lindo Wing after the birth of his third child on April 23, 2018 in London, England. The Duchess of Cambridge gave birth to a boy at 11:01 BST, weighing 8lb 7oz. (Photo by Neil Mockford/GC Images)
LONDON, ENGLAND - APRIL 23: Prince William, Duke of Cambridge, Prince George and Princess Charlotte arrive at the Lindo Wing after the birth of his third child on April 23, 2018 in London, England. The Duchess of Cambridge gave birth to a boy at 11:01 BST, weighing 8lb 7oz. (Photo by Neil Mockford/GC Images)
Princess Charlotte of Cambridge (L) turns to wave at the media as she is led in with her brother Prince George of Cambridge (R) by their father Britain's Prince William, Duke of Cambridge, (C) at the Lindo Wing of St Mary's Hospital in central London, on April 23, 2018, to visit Catherine, Duchess of Cambridge, and their new-born brother, the Duke and Duchess's third child. - Kate, the wife of Britain's Prince William, has given birth to a baby son, Kensington Palace announced Monday. 'Her Royal Highness The Duchess of Cambridge was safely delivered of a son at 11:01 (1001 GMT),' the palace said in a statement. The baby boy weighs eight pounds and seven ounces (3.8 kilogrammes). (Photo by Ben STANSALL / AFP) (Photo credit should read BEN STANSALL/AFP/Getty Images)
LONDON, ENGLAND - APRIL 23: Prince William, Duke of Cambridge arrives with Prince George and Princess Charlotte at the Lindo Wing after Catherine, Duchess of Cambridge gave birth to their son at St Mary's Hospital on April 23, 2018 in London, England. The Duchess safely delivered a boy at 11:01 am, weighing 8lbs 7oz, who will be fifth in line to the throne. (Photo by Chris Jackson/Getty Images)
Britain's Prince William, Duke of Cambridge, gives a wave as he leaves the Lindo Wing at St Mary's Hospital in central London, on April 23, 2018, after his wife Britain's Catherine, Duchess of Cambridge, gave birth to a son, their third child. - Kate, the wife of Britain's Prince William, has given birth to a baby son, Kensington Palace announced Monday. 'Her Royal Highness The Duchess of Cambridge was safely delivered of a son at 11:01 (1001 GMT),' the palace said in a statement. The baby boy weighs eight pounds and seven ounces (3.8 kilogrammes). (Photo by Ben STANSALL / AFP) (Photo credit should read BEN STANSALL/AFP/Getty Images)
Britain's Prince William, Duke of Cambridge, gives a wave as he leaves the Lindo Wing at St Mary's Hospital in central London, on April 23, 2018, after his wife Britain's Catherine, Duchess of Cambridge, gave birth to a son, their third child. - Kate, the wife of Britain's Prince William, has given birth to a baby son, Kensington Palace announced Monday. 'Her Royal Highness The Duchess of Cambridge was safely delivered of a son at 11:01 (1001 GMT),' the palace said in a statement. The baby boy weighs eight pounds and seven ounces (3.8 kilogrammes). (Photo by Ben STANSALL / AFP) (Photo credit should read BEN STANSALL/AFP/Getty Images)
Britain's Prince William, Duke of Cambridge, gives a wave as he leaves the Lindo Wing at St Mary's Hospital in central London, on April 23, 2018, after his wife Britain's Catherine, Duchess of Cambridge, gave birth to a son, their third child. - Kate, the wife of Britain's Prince William, has given birth to a baby son, Kensington Palace announced Monday. 'Her Royal Highness The Duchess of Cambridge was safely delivered of a son at 11:01 (1001 GMT),' the palace said in a statement. The baby boy weighs eight pounds and seven ounces (3.8 kilogrammes). (Photo by Ben STANSALL / AFP) (Photo credit should read BEN STANSALL/AFP/Getty Images)
Britain's Prince William, Duke of Cambridge, gives a wave as he leaves the Lindo Wing at St Mary's Hospital in central London, on April 23, 2018, after his wife Britain's Catherine, Duchess of Cambridge, gave birth to a son, their third child. - Kate, the wife of Britain's Prince William, has given birth to a baby son, Kensington Palace announced Monday. 'Her Royal Highness The Duchess of Cambridge was safely delivered of a son at 11:01 (1001 GMT),' the palace said in a statement. The baby boy weighs eight pounds and seven ounces (3.8 kilogrammes). (Photo by Ben STANSALL / AFP) (Photo credit should read BEN STANSALL/AFP/Getty Images)
Britain's Prince William, Duke of Cambridge, gives a wave as he leaves the Lindo Wing at St Mary's Hospital in central London, on April 23, 2018, after his wife Britain's Catherine, Duchess of Cambridge, gave birth to a son, their third child. - Kate, the wife of Britain's Prince William, has given birth to a baby son, Kensington Palace announced Monday. 'Her Royal Highness The Duchess of Cambridge was safely delivered of a son at 11:01 (1001 GMT),' the palace said in a statement. The baby boy weighs eight pounds and seven ounces (3.8 kilogrammes). (Photo by Isabel INFANTES / AFP) (Photo credit should read ISABEL INFANTES/AFP/Getty Images)
LONDON, ENGLAND - APRIL 23: Tourists and photographers take pictures of a notice placed on an easel in the forecourt of Buckingham Palace in London to formally announce the birth of a baby boy to the Duke and Duchess of Cambridge at the Lindo Wing of St Mary's Hospital on April 23, 2018 in London, England. The Duchess safely delivered a son at 11:01 am, weighing 8lbs 7oz, who will be fifth in line to the throne. (Photo by Stefan Rousseau - WPA Pool/Getty Images)
LONDON, ENGLAND - APRIL 23: A notice is placed on an easel in the forecourt of Buckingham Palace in London to formally announce the birth of a baby boy to the Duke and Duchess of Cambridge at the Lindo Wing of St Mary's Hospital on April 23, 2018 in London, England. The Duchess safely delivered a son at 11:01 am, weighing 8lbs 7oz, who will be fifth in line to the throne. (Photo by Stefan Rousseau - WPA Pool/Getty Images)
A Royal bulletin, announcing that Britain's Catherine, Duchess of Cambridge, the wife of Britain's Prince William, has given birth to a baby boy, stands on an easel on the forecourt of Buckingham Palace in London on April 23, 2018. - Kate, the wife of Britain's Prince William, has given birth to a baby son, Kensington Palace announced Monday. 'Her Royal Highness The Duchess of Cambridge was safely delivered of a son at 11:01 (1001 GMT),' the palace said in a statement. The baby boy weighs eight pounds and seven ounces (3.8 kilogrammes). (Photo by Stefan Rousseau / POOL / AFP) (Photo credit should read STEFAN ROUSSEAU/AFP/Getty Images)
Palace staff position a Royal bulletin, announcing that Britain's Catherine, Duchess of Cambridge, the wife of Britain's Prince William, has given birth to a baby boy, on an easel on the forecourt of Buckingham Palace in London on April 23, 2018. - Kate, the wife of Britain's Prince William, has given birth to a baby son, Kensington Palace announced Monday. 'Her Royal Highness The Duchess of Cambridge was safely delivered of a son at 11:01 (1001 GMT),' the palace said in a statement. The baby boy weighs eight pounds and seven ounces (3.8 kilogrammes). (Photo by Daniel SORABJI / AFP) (Photo credit should read DANIEL SORABJI/AFP/Getty Images)
A Royal bulletin, announcing that Britain's Catherine, Duchess of Cambridge, the wife of Britain's Prince William, has given birth to a baby boy, stands on an easel on the forecourt of Buckingham Palace in London on April 23, 2018. - Kate, the wife of Britain's Prince William, has given birth to a baby son, Kensington Palace announced Monday. 'Her Royal Highness The Duchess of Cambridge was safely delivered of a son at 11:01 (1001 GMT),' the palace said in a statement. The baby boy weighs eight pounds and seven ounces (3.8 kilogrammes). (Photo by Stefan Rousseau / POOL / AFP) (Photo credit should read STEFAN ROUSSEAU/AFP/Getty Images)
Camera crews prepare outside the Lindo Wing at St Mary's Hospital in central London where Britain's Catherine, Duchess of Cambridge gave birth to a baby boy on April 23, 2018. (Photo by Daniel LEAL-OLIVAS / AFP) (Photo credit should read DANIEL LEAL-OLIVAS/AFP/Getty Images)
Royal fans celebrate the news that Britain's Catherine, Duchess of Cambridge gave birth to a baby boy outside the Lindo Wing at St Mary's Hospital in central London, on April 23, 2018. (Photo by Isabel INFANTES / AFP) (Photo credit should read ISABEL INFANTES/AFP/Getty Images)
A town crier announces the news of the birth of a baby boy by Britain's Catherine, Duchess of Cambridge outside the Lindo Wing at St Mary's Hospital in central London, on April 23, 2018. (Photo by Ben STANSALL / AFP) (Photo credit should read BEN STANSALL/AFP/Getty Images)
A town crier outside the Lindo Wing at St Mary's Hospital in Paddington, London, after the news that the Duchess of Cambridge has given birth to a son. (Photo by Kirsty O'Connor/PA Images via Getty Images)
LONDON, ENGLAND - APRIL 23: A town crier announces that the Duchess of Cambridge has given birth to a baby boy at St Mary's Hospital on April 23, 2018 in London, England. The Duke and Duchess of Cambridge's third child was born this morning at 11:01, weighing 8lbs 7oz. (Photo by Jack Taylor/Getty Images)
LONDON, ENGLAND - APRIL 23: A town crier announces the birth of the new prince on the steps of the Lindo Wing on April 23, 2018 in London, England. (Photo by Neil Mockford/GC Images)
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“It has been a great honor to register and formally welcome the latest addition to the royal family, Prince Louis Arthur Charles,” Gordon said in a statement. “This follows a long history of Westminster City Council registering royal bites including Prince Louis’ siblings Prince George and Princess Charlotte.”

The royal family’s newest addition is likely a tribute to Prince Philip’s late uncle Louis Mountbatten. Mountbatten was assassinated by members of the Provisional Irish Republican Army (IRI) during a trip to Ireland in 1979. 

Though William told the media on April 25 that Louis is sleeping “reasonably well,” that same day he was filmed dozing off during the annual Anzac Day Service of Commemoration and Thanksgiving at Westminster Abbey.

The release of Louis’ birth certificate comes just one day before his sister turns 3.

15 PHOTOS
Meet Britain's newest prince!
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Meet Britain's newest prince!
TOPSHOT - Britain's Prince William, Duke of Cambridge (L) and Britain's Catherine, Duchess of Cambridge show their newly-born son, their third child, to the media outside the Lindo Wing at St Mary's Hospital in central London, on April 23, 2018. (Photo by Daniel LEAL-OLIVAS / AFP) (Photo credit should read DANIEL LEAL-OLIVAS/AFP/Getty Images)
LONDON, ENGLAND - APRIL 23: The newborn son of Prince William, Duke of Cambridge and Catherine, Duchess of Cambridge as they depart the Lindo Wing at St Mary's Hospital on April 23, 2018 in London, England. The Duchess safely delivered a boy at 11:01 am, weighing 8lbs 7oz, who will be fifth in line to the throne. (Photo by Chris Jackson/Getty Images)
Britain's Catherine, Duchess of Cambridge holds her newly-born son, her third child, as she and her husband Britain's Prince William, Duke of Cambridge (unseen) show him to the media outside the Lindo Wing at St Mary's Hospital in central London, on April 23, 2018. - Britain's Prince William accompanied his wife Catherine as she left hospital after giving birth to a baby boy, the couple's third child who is fifth in line to the British throne. (Photo by John Stillwell / POOL / AFP) (Photo credit should read JOHN STILLWELL/AFP/Getty Images)
LONDON, ENGLAND - APRIL 23: Catherine, Duchess of Cambridge departs the Lindo Wing with her newborn son at St Mary's Hospital on April 23, 2018 in London, England. The Duchess safely delivered a boy at 11:01 am, weighing 8lbs 7oz, who will be fifth in line to the throne. (Photo by John Stillwell - WPA Pool/Getty Images)
LONDON, ENGLAND - APRIL 23: The newborn son of Prince William, Duke of Cambridge and Catherine, Duchess of Cambridge as they depart the Lindo Wing at St Mary's Hospital on April 23, 2018 in London, England. The Duchess safely delivered a boy at 11:01 am, weighing 8lbs 7oz, who will be fifth in line to the throne. (Photo by Chris Jackson/Getty Images)
LONDON, ENGLAND - APRIL 23: Prince William, Duke of Cambridge and Catherine, Duchess of Cambridge depart the Lindo Wing with their newborn son at St Mary's Hospital on April 23, 2018 in London, England. The Duchess safely delivered a boy at 11:01 am, weighing 8lbs 7oz, who will be fifth in line to the throne. (Photo by Chris Jackson/Getty Images)
LONDON, ENGLAND - APRIL 23: Catherine, Duchess of Cambridge and Prince William, Duke of Cambridge depart the Lindo Wing with their newborn son at St Mary's Hospital on April 23, 2018 in London, England. The Duchess safely delivered a son at 11:01 am, weighing 8lbs 7oz, who will be fifth in line to the throne. (Photo by Karwai Tang/WireImage)
LONDON, ENGLAND - APRIL 23: Catherine, Duchess of Cambridge leaves with her new baby from the Lindo Wing, St Mary's Hospital on April 23, 2018 in London, England. (Photo by Mark Cuthbert/UK Press via Getty Images)
LONDON, ENGLAND - APRIL 23: Catherine, Duchess of Cambridge departs the Lindo Wing with her newborn son at St Mary's Hospital on April 23, 2018 in London, England. The Duchess safely delivered a boy at 11:01 am, weighing 8lbs 7oz, who will be fifth in line to the throne. (Photo by John Stillwell - WPA Pool/Getty Images)
LONDON, ENGLAND - APRIL 23: Catherine, Duchess of Cambridge departs the Lindo Wing with her newborn son at St Mary's Hospital on April 23, 2018 in London, England. The Duchess safely delivered a boy at 11:01 am, weighing 8lbs 7oz, who will be fifth in line to the throne. (Photo by John Stillwell - WPA Pool/Getty Images)
The Duke and Duchess of Cambridge and their newborn son outside the Lindo Wing at St Mary's Hospital in Paddington, London. (Photo by Dominic Lipinski/PA Images via Getty Images)
LONDON, ENGLAND - APRIL 23: Prince William, Duke of Cambridge and Catherine, Duchess of Cambridge, pose for photographers with their newborn baby boy outside the Lindo Wing of St Mary's Hospital on April 23, 2018 in London, England. The Duke and Duchess of Cambridge's third child was born this morning at 11:01, weighing 8lbs 7oz. (Photo by Dan Kitwood/Getty Images)
LONDON, ENGLAND - APRIL 23: Catherine, Duchess of Cambridge and Prince William, Duke of Cambridge depart the Lindo Wing with their newborn son at St Mary's Hospital on April 23, 2018 in London, England. The Duchess safely delivered a son at 11:01 am, weighing 8lbs 7oz, who will be fifth in line to the throne. (Photo by Mike Marsland/Mike Marsland/ WireImage)
LONDON, ENGLAND - APRIL 23: Prince William, Duke of Cambridge and Catherine, Duchess of Cambridge, pose for photographers with their newborn baby boy outside the Lindo Wing of St Mary's Hospital on April 23, 2018 in London, England. The Duke and Duchess of Cambridge's third child was born this morning at 11:01, weighing 8lbs 7oz. (Photo by Jack Taylor/Getty Images)
LONDON, ENGLAND - APRIL 23: Catherine, Duchess of Cambridge and Prince William, Duke of Cambridge, depart the Lindo Wing with their newborn son at St Mary's Hospital on April 23, 2018 in London, England. The Duchess safely delivered a boy at 11:01 am, weighing 8lbs 7oz, who will be fifth in line to the throne. (Photo by Gareth Cattermole/Gareth Cattermole/Getty Images)
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