Lai's father was Tuyển (Trung Thành) and his mother was Huệ thị Vũ. His paternal grandparents were Thuận and Vẽn thị Nguyễn. He had a brother and a sister, named Dương and An. He was the oldest of the three children. He had two half-brothers and a half-sister, named Vũ, Cao and Nhàn. He died due to Mất sớm, giỗ 7/4 âm lịch.