Forefather - Vine's Expository Dictionary of New Testament Words
Forefather
[ 1,,G4269, progonos ]an adjective, primarily denoting born before" (pro, "before," and ginomai, "to become"), is used as a noun in the plural, 2 Timothy 1:3, "forefathers" (in 1 Timothy 5:4, "parents"). See PARENTS.
[ 2,,G4253 / G3962, propator ]
"a forefather" (pro, "before," pater, "a father"), is used of Abraham in Romans 4:1.