What is the origin of the surname cox? help please!?

It is of English or Welsh origin and may have originated independently in several locations in Great Britain, and only later the variations came to a standard spelling. One possibility of the origin is that it is a version of the Old English cocc which means "the little," and placed after the name of a leader or chieftain as a term of endearment. Surnames such as Wilcox, Wills and Willcox are examples of this practice, which are composed of the name William and the archaic word cocc, coming together as "little William." The suggestion is that only the element -cox may have endured as a surname for some families