Sir Lancelot served the Great King Arthur as a gallant Knight of the Round Table. He was a knight so fearless, so dashing, and so ... shiny and clean that to be rescued (or challenged!) by him would truly be an honor. He was quite good at defending the helpless, protecting the weak, and jousting with strangers--as long Sonlight resource: https://www.sonlight.com/products/adventures-of-sir-lancelot-the-great