When Howard D. Regan was born on 19 March 1916, in Auburndale, Wood, Wisconsin, United States, his father, Dennis T Regan, was 48 and his mother, Emma D. Baltus, was 33. He married Agnes Marie Boyles on 7 June 1945, in Wisconsin Rapids, Wood, Wisconsin, United States. He lived in Wood, Wisconsin, United States in 1935 and Wisconsin Rapids, Wood, Wisconsin, United States in 1940. He died on 3 March 1974, in Madison, Dane, Wisconsin, United States, at the age of 57, and was buried in Wisconsin Rapids, Wood, Wisconsin, United States.