English
firster
From first + -er (“supporter”).
Formed from first + -er ‘supporter’
Proto-Indo-European *per- ‘before’
…
Proto-Germanic *furistaz ‘first’
Proto-West Germanic *furist
Old English fyrest
Middle English first
English first
Today it means
noun A person who advocates the primacy of the named entity (who puts it first).
Language periods are conventional ranges, not dates for this word.
Etymograph / firster