Sơn was born in 1953. Sơn's father was Du and his mother is Liễu Trương thị. His paternal grandparents were Bách and Qúy Nghiêm phú. He had a brother named Đức. He was the older of the two children. He had two half-sisters named Hạnh and Hảo. He died at the age of 20 in 1973.