former (adj.) Look up former at
"earlier in time," mid-12c., comparative of forme "first," from Old English forma, from Proto-Germanic *fruma, from PIE *pre-mo-, suffixed (superlative) form of root *per- (1) "forward, through; before; first" (see per). Probably patterned on formest (see foremost); it is an unusual case of a comparative formed from a superlative (the -m- is a superlative element).
former (n.) Look up former at
"one who gives form," mid-14c., agent noun from form (v.).