In Shakespearean the meaning of the name William is: Henry VI, 2' Sir John Stanley. 'Henry VI, Part III' Sir William Stanley. 'As You Like It' A country fellow. From the Germanic name Willahelm, which was composed of the elements wil " will, desire" and helm "helmet, protection". Saint William of Gellone was an. Thinking of names? Complete information on the meaning of William, its origin, history, pronunciation, popularity, variants and more as a baby boy name.