Resolute protector: will. For a long time after the Norman conquest in A.D. 1066 many English boys were given some form of William the Conquers name. William. The firstborn son of Prince Charles is named William.
Resolute or brilliant
President William Jefferson Clinton, Playwright William Shakespeare, Actor William Hurt, Poet William Yeats, Poet Wiliam Blake, Actor William Macy, Writer William Faulkner
Son of Billy Bob Thornton, Son of Abraham Lincoln, Son of Billy Crudup, Son of Kimberly Williams, Son of Mel Gibson, Son of Mary-Louise Parker, Son of Colin Firth, Son of Christompher Reeve