Family: Cadfan Ap Iago, of Gwynedd / Tandreg Ferch Cynan, of Powys (F1400)
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Male
Cadfan Ap Iago, of Gwynedd
Birth 580 Death 617 Burial Marriage Father King of Gwynedd Iago Ap Beli | F1401 Group Sheet Mother
Female
Tandreg Ferch Cynan, of Powys
Birth 580 Powys, , Wales, United Kingdom 
Death Yes, date unknown Burial Father Cynan Ap Brochwel, of Powys | F2876 Group Sheet Mother
Male
+ King of Gwynedd Cadwallon Ap Cadfan
Birth 600 Death 634 Burial Spouse Princess of Mercia Alcfrith Ellen | F1399 Marriage