ancestor
Definitions
A person from whom one is descended, especially one more remote than a grandparent.
An early type of animal or plant from which others have evolved.
An early version of a machine or system from which later developments have evolved.
Examples
My ancestor migrated to this country over a century ago.
The ancient ruins provide a fascinating glimpse into the lives of our distant ancestors.
Synonyms
forebear forefather predecessor progenitor forbear root antecedent