Boy name origins & meanings Teutonic : Valiant protector Boy name variations William Wil Will Willem Wilhelm Wilmos Wilmot Wilson Williams Williamson Wills Willie Willy Wiley Wyley Wilkie Willkie Wilkes Willis Wilton Wilmer Wilmar Winton Willard Wilford Guillaume Guillermo Vilhelm Vilem Viliam Vasili Vasily Uilleam Uilliam