Grant Jackson was born on 28 September 1942 in Fostoria, Ohio, USA. He was married to Milagro "Millie" Quinones. He died on 2 February 2021 in Canonsburg, Pennsylvania, USA.
Pitcher for the Philadelphia Phillies (1965-1970), Baltimore Orioles (1971-1976), New York Yankees (1976), Pittsburgh Pirates (1977-1981 and 1982), Montreal Expos (1981) and Kansas City Royals (1982).