Hàm was born in 1919. Hàm's father was Lạn and his mother was Định Nguyễn. His paternal grandparents were Gị and Khương Phạm. He had four brothers and three sisters, named Thiện, Thọ, Việt, Huỳnh, Phẩm, Cát and Chức. He had two half-brothers and four half-sisters, named Chúc, Tử, Cúc, Mai, Đồng and Biền.
General Notes
1. 1939 vào trường Võ-bị Hanoi 2. 1948: đỗ Dược-sĩ - Hiệu thuốc Hàng-Trống Hanoi 3. Đảng viên Quốc-Dân-Đảng (?) 4. Mở Hãng chế thuốc ở Saigon 5. Di cư sang Canada (1975)