Ellen Antoinette Larsen was Waldo's fourth wife, and they remained married for 24 years until his death. "I spoke with my Aunt Karin," Will Peirce, Waldo's grandson, writes. "Her mother was Ellen Larsen, born in Minneapolis in 1920, passed away in 2001. She studied art in New York—she painted. A friend of Ellen’s used to model for Waldo, and she and Waldo went to a well-known cafe or restaurant where Ellen waited tables. It was during wartime. The romance started there. She preferred the quiet life in Maine, but she kept a pied-à-terre in Manhattan. After they got married, she modeled for Waldo, as did his kids. There was no escaping that job in our family! Her painting style resembled Waldo’s sometimes. Sometimes it was quite different."