Forefather

(n.) An ancestor; one who precedes another in the line of genealogy in any degree, but usually in a remote degree.

Thesaurus Entries

ancestress, announcer, antecedent, ascendant, avant-garde, begetter, bellwether, buccinator, bushwhacker, explorer, forebear, forefather, foregoer, forerunner, front runner, frontiersman, fugleman, grandparent, groundbreaker, guide, harbinger, herald, innovator, lead runner, leader, messenger, parent, pathfinder, pioneer, point, precedent, precursor, predecessor, premise, primogenitor, procreator, progenitor, progenitress, progenitrix, prototype, scout, stormy petrel, trailblazer, trailbreaker, vanguard, vaunt-courier, voortrekker