Birth Name: Gregory Alan Maddux
Place of Birth: San Angelo, Tom Green, Texas, U.S.
Date of Birth: April 14, 1966
Ethnicity: English, Irish, possibly other
Greg Maddux is an American professional baseball player. He is a former pitcher with the Major League Baseball (MLB).
Greg is the son of Linda and David Maddux. He is married to Kathy, with whom he has two children. His brother is professional baseball player and coach Mike Maddux.
Greg’s paternal grandfather was Stanley William Maddux (the son of John Edward Maddux and Melissa McCammon). John was the son of Joseph Wilson Maddux and Margaret Porter.
Greg’s paternal grandmother was Clara Pearl Davis (the daughter of Joseph Elbert Davis and Jennie R. Elliott).
Greg’s maternal grandfather’s surname is Martin.
Source: Genealogy of Greg Maddux (focusing on his father’s side) – http://www.genealogy.com