In English, name Lancelot means – Servant. God-like. Also a diminutive of Lance. In Arthurian legend, Sir Lancelot was King Arthurs close friend and a Knight of the Round Table. A central theme in Arthurian legend is the adulterous love between Lancelot and Queen Guinevere.. Other origins for name Lancelot include – English, French, French. Name Lancelot is most often used as a boy name or male name.