Luke Thomas thinks this is interesting:

Susan Buffett, who with her husband owned a majority interest in Berkshire Hathaway, was a vivacious, empathetic person whom Buffett described as “a free spirit.” She lived in San Francisco and told me, “I have a quiet life of my own with my family and people I love.” Buffett continued to live in Omaha. Several years after Susie’s death, Warren remarried.