[1] DeGroff was one of the original members of Christian rock band Petra in 1972, along with Greg Hough, Bill Glover and Bob Hartman.
[citation needed] After leaving Petra, DeGroff played in several bands in the Fort Wayne area, and also did some session work.
June 12, 2004: Oakhill Family Campground - Angola, IN (DeGroff, Hough and Hartman) Setlist: Walkin' in the Light Get Back to the Bible I'm Not Ashamed Lucas McGraw Storm Comin' Backslidin' Blues Rockin' On With Jesus November 12, 2005: Petra Farewell Tour - First Assembly of God - Ft. Wayne, IN.
[citation needed] John DeGroff had two children with former wife Lynnette Stanley (nee Fry).
DeGroff married Jennifer Savage in 2006; the couple currently resides in Indiana and are active in music ministry in their church.