Nguyễn Văn Tuấn (1934–2011), Ông Nội, taught mathematics in Saigon for twenty years and worked nights in a machine shop in Houston for fifteen, and never once complained about either in front of the children.

Work
A teacher in Saigon; a machinist in Houston. He checked every grandchild's homework until he was seventy-five.
Family
He married Hoa in 1958 and came over first, in 1979, with the two oldest. The cassette tapes were his idea.