[Facts] Re: i need your help
There are at least a couple of possible meanings for the surname "Foster":
#1. (English) One in charge of a forest, a forest warden; a gamekeeper, a manor official.
#2. English nickname from Middle English *foster*, meaning "foster parent" (which comes from Old English *fostre*, a derivative of Old English *fostrian*, meaning "to nourish, rear", from the word *foster*, meaning "food").
-- Nanaea