Willy

Willy is a Germanic name functioning as a short form of Wilhelm, which combines the elements wil, meaning "will" or "desire," and helm, meaning "helmet" or "protection." The compound sense is roughly "resolute protector," a meaning shared by the broader Wilhelm family of names. It gained widespread use across northern Europe and the English-speaking world, carried in part by the prestige of the Norman French form William and rulers such as William the Conqueror. Related forms include Wilhelm, Willem, Wim, Bill, and Will.