- b.~ 0764 in Seion, Caernarvon, Wales d.0843 in Battle of Cyfeil,Ketell,Wales
- b.~ 0789 in of Caer Seiont,Carnarvonshire,Wales d.0878 in Anglesey,Wales
- b.~ 0770 in of Caer Seiont,Carnarvonshire,Wales
- b.~ 0861 in Caer Seiout,Crnrvn,Wales d.0907
- b.~ 0780 in of Ceredigion,Wales
- b.~ 0825 in of Ceredigion,Wales
- b.~ 0887 in of Deheubarth,Wales d.0950
- b.~ 0865 in Dynevor Castle,Llandilo,Carm,Wales
- b.~ 0913 in of Dynevor,Llandyfeisant,Carmarthenshire,Wales d.0987
- b.~ 0790 in of Dyfed,Wales
- b.~ 0820 in of Dyfed,Wales d.0893
- b.~ 0794 in Of Dynevor, Llandyfeisant, Carmarthen, Wales
- b.~ 0867 in of Dynevor,Wales d.0904
- b.~ 0893 in of Dyfed,Wales d.0943
- b.~ 0938 in Dynevor Castle,Llandilo,Carm,Wales d.0999