Leo married Mildred Eulalie Carter on 6 Jul 1924 in Manhattan, New York, New York, United States. Mildred (daughter of James Carter and Ellen Cadogan) was born in in Lawrence, Essex, Massachusetts, United States; died in 1967 in Lawrence, Essex, Massachusetts, United States. [Group Sheet] [Family Chart]

1. Brian Casey was born in 1926 in Massachusetts, United States; died in in Salem, Rockingham, New Hampshire, United States.
2. Donal Casey was born in 1929 in Massachusetts, United States; died in in Chelsea, Suffolk, Massachusetts, United States.
3. Carol Casey was born on 11 Dec 1933 in Chelsea, Suffolk, Massachusetts, United States; died on 18 Nov 2006 in Nahant, Essex, Massachusetts, United States.