forefather
noun
[ ˈfɔːfɑːðə ]
• a member of the past generations of one's family or people; an ancestor.
• "the duchy which her forefathers had ruled since the tenth century"
Similar:
forebear,
ancestor,
predecessor,
progenitor,
father,
grandfather,
parent,
grandparent,
antecedent,
forerunner,
precursor,
primogenitor,