1. Ysgeir Gulhwch Govyncawn
      Esgeir Gulhwch Govynkawn

      An Arthurian warrior mentioned in the long list of the members of Arthurís court in Culhwch and Olwen.

      His name translates as "Ridge of Culhwch the Reed-cutter", which makes little sense as a personal name.

    2. Ysgeir Oervel

      A ridge in Ireland where Menw, Arthurís warrior and sorcerer, was wounded by the boar Twrch Trwyth.

      Arthurís epic hunt for Twrch Trwyth began at Ysgeir Oervel.