In the Historia Regum Britanniae, Geoffrey of Monmouth calls Arthur's lance Ron, presumably an abbreviation of the original Welsh name. Layamon also calls it this in his Brut. Geoffrey states that Arthur carried this lance with him at the Battle of Mount Badon. Layamon states in a passage (without naming the weapon) that Arthur's spear was forged in Carmarthen by a smith called Griffin. He also adds that it formerly belonged to Uther Pendragon.