The two Deiniols

There were two Deiniols who have become conflated and their pedigrees are shown in the table below:

Gen. ByS 12 ByS 13
2 Deiniol
1 Dunod Fwr Dwywai
0 Pabo Post Prydyn Lleenog Asaph Deiniolfab
-1 Sawyl (Benuchel) [Benisel] Gwenasedd
-2 Pabo (Post Prydyn) Rhain Hael

As indicated by the AC, Dunod Fwr died in 595. According to the HRB he was at Arthur’s coronation. He was also present at the battle of Arderydd. It was his son who predeceased him in the year 584 as indicated by the AC. His death is mentioned together with the battle of the Isle of Man and, perhaps, the two are related.

Note, St. Asaph’s sister was one of the wives of Maelgwn Gwynedd and the mother of Eurgain. Maelgwn’s Wife and the Ring describes an incident involving her as well as St. Asaph. The Daniel referred to as having died in the reign of Constantine in the HRB was Deiniolfab, the brother of St. Asaph.

ByS 13 gives Sawyl the incorrect cognomen Benuchel. It should have been Benisel. As indicated on the chart, the Pabo of ByS 13 did not have the cognomen Post Prydyn, see Pabo and Sawyl.

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