David McCallum is married to Katherine Carpenter in real life. According to Married Celeb, Carpenter, a former actress and model, now works with her husband on philanthropic projects, including efforts for the United States Marine Corps. The two wed in New York on September 16, 1967, and the pair share two children: a son, Peter, and a daughter, Sophie.
The outlet notes that the pair met in 1965, while McCallum and his “Man from U.N.C.L.E.” co-star, Robert Vaughn, were posing for a magazine photo shoot in New York City. Carpenter, who was 21 years old at the time, was part of the ensemble of famous models accompanying them at the time, and the two soon became inseparable. After dating for a couple of years, McCallum popped the question on the Fourth of July in 1967, and a small wedding followed a few months later.