I usually ignore these school project queries. I always wonder why American kids never dream of walking into a library and picking up a dictionary of surnames. Is it because George Bush thinks libraries are hotbeds of terrorism? You seem to have done some work on this so I'll break my rule. Soars is an English name, though the original word, SOR, is an Old French word meaning "reddish-brown" (i.e., hair colour). The word sorrel is from the same source, and the French have similar surnames, Sor, Sorel, Soret. Christou is Greek, so your doubts are unfounded. It means (son) of Christos, which name means "Christ", an acceptable male name in the Greek Orthodox religion.