In the "Life of St. Cadoc" (c.1100) Bedwyr is alongside Arthur and Cai in dealing with King Gwynllyw of Gwynllwg's abduction of St. Gwladys from her father's court in Brycheiniog. Cai appears prominently in the early Welsh version of "Tristan and Isolde", in which he assists the two lovers and is himself infatuated with a maiden named Golwg Hafddydd, and in the early dialogue poems relating to Melwas' abduction of Gwenhwyfar. The context suggests that Cai is rescuing the queen from the otherworldly suitor, and may imply a romantic relationship between Cai and Gwenhwyfar.