Progenitor
Pronunciation : Pro*gen"i*tor
Part of Speech : n.
Etymology : [OF. progeniteur, L. progenitor, fr. progignere, progenitum, to bring forth, to beget; pro forth + gignere to beget. See Gender kind.]
Definition : Defn: An ancestor in the direct line; a forefather. And reverence thee their great progenitor. Milton.
Source : Webster's Unabridged Dictionary, 1913