Forefather
From BiblePortal Wikipedia
Vine's Expository Dictionary of NT Words [1]
1: Πρόγονος (Strong'S #4269 — Adjective — progonos — prog'-on-os )
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: Πρό (Strong'S #4253 | 3962 — Preposition — propator — pro )
"a forefather" (pro, "before," pater, "a father"), is used of Abraham in Romans 4:1 .
Webster's Dictionary [2]
(n.) One who precedes another in the line of genealogy in any degree, but usually in a remote degree; an ancestor.
International Standard Bible Encyclopedia [3]
fōr´fa - thẽr :
(1) אב ראשׂן , 'ābh rı̄'shōn , "first father," "chief father," hence, "early ancestor": "turned back to the iniquities of their forefathers" ( Jeremiah 11:10 ).
πρόγονος prógonos 2 Timothy 1:3 1 Timothy 5:4