ancestor (n.)
- ancestress
- announcer
- antecedent
- ascendant
- avant-garde
- begetter
- bellwether
- buccinator
- bushwhacker
- explorer
- forebear
- forefather
- forerunner
- frontiersman
- fugleman
- grandparent
- groundbreaker
- guide
- harbinger
- herald
- innovator
- leader
- messenger
- parent
- pathfinder
- pioneer
- point
- precedent
- precursor
- predecessor
- premise
- primogenitor
- progenitor
- prototype
- scout
- trailblazer
- vanguard
I know nothing about it; I am my own ancestor.