Susan's grandfather once ran a campaign for Republican United States Representative Howard Buffett, Warren's grandfather. It apparently didn't go well. Their daughter, Susie Buffett, told Business Insider that it was "the only time my grandpa Buffett lost."
Buffett formed a friendship with her father Bill, a professor and mandolin player who knew his parents. They would jam out together in the Thompson residence, giving Buffett the opportunity to call on Susan.
The couple had three children together. Susie, the eldest, is a philanthropist. Howard, the middle child, is a businessman and politician who was recently sworn in as sheriff of Macon County, Illinois. Peter, the youngest, is a musician.
After Berkshire Hathaway bought a stake in The Washington Post, publisher Katherine Graham and Buffett struck up a flirtatious relationship — which included jaunts to Martha's Vineyard and Graham throwing her keys to the investor during parties. Susan was reportedly furious and began an affair with a tennis instructor.
"It was definitely 95% my fault ... I just wasn't attuned enough to her, and she'd always been perfectly attuned to me," he said, according to the New York Daily News. "She kept me together for a lot of years ... It shouldn't have happened."
Then, the following year, Susan introduced her husband to restaurant hostess and Latvian immigrant Astrid Menks. They had become friends when Susan began singing at the restaurant. Astrid quickly moved in and became Buffett's companion.
The three remained close and essentially functioned as a trio. "Astrid and my mother were very close — really loved each other," Susie Buffett told The New York Times. According to Time, Buffett would often say, "Susie put me together and Astrid keeps me together."
According to his daughter Susie, Buffett had been thinking about marrying Astrid for some time after his first wife's death. "He's been talking about this for a while," she told The New York Times. "It's something he wanted to do."