JC20 7 states that Cunedda Wledig had two daughters, Tegid and Gwen, the latter being the wife of Amlawdd Wledig:
D6y verchet Cuneda Tecgygyl A Gwen g6reic Anla6d wledic.
ByA 29(14) agrees with the above, adding that Gwen was the mother of Cynwal Garnhwch:
Dwy ferchet Kunedda: Tegit, Gwenn ferch Kunedda gwreig Amlwyd wledig, mam Kynwal garnhwch.
Amlawdd and Gwen’s son Cynwal Garnwch appears in CO as Kynwal Canhwch, the father of Gwen Alarch whose name means White Swan. Bartrum in WCD says Kynwal’s name appears to be the Welsh equivalent of the Ulster hero Conall Cernach. Cynwal may have been given this name as it was also that of Amlawdd’s own father.