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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Cyfoesi Myrddin a Gwenddydd ei chwaer

This poem, Dialogue between Myrddin and his sister Gwenddydd, is from the LCH. It is taking place after the battle of Arderydd of 575. It then conflates Rhydderch Hen, who may have participated in that battle, with Rhydderch Hael of Gwynedd. The dialogue refers to his victory at the ford of the river Towy. This river flows through Caerfyrddin before entering Carmarthen Bay.

BGG 8 gives no name as successor to Rhydderch, see Rhydderch Hael and Rhydderch Hen, but the poem tells us it was Morgan Mawr ap Sadyrnin. The dialogue states Gwenddoleu, who was of gen. 1, see the table below, would have been the natural successor as supreme British monarch but for his death at Ardderyd. Sadyrnin was St. Sadwrn and there is a Llansadwrn both in Carmarthenshire and in Anglesey.[1] A stone bearing his name in Latin, Saturninus, was found at the parish church in Anglesey.[2] Nash-Williams states Sadwrn Farchog was the brother of St. Illtyd.[3] Their mother was Rieingulid, daughter of Amlawdd Wledig, according to the V. Illtuti. This allows us to conclude Morgan also belonged to gen. 1. The poem goes on to say Morgan was suceeded by Urien. As he too belonged to gen. 1, it may have been that Urien replaced Morgan as leader of the British forces. This may have been the reason behind Urien’s assassination. Bartrum had difficulty reconciling this sequence of three kings and suggested the sequence was in reverse order.[4] However, this was not the case and his mistake was to assume that Rhydderch Hael and Rhydderch Hen were the same individual.

Gen. BGG 6
  HG 8
1 Gwenddoleu Nudd Cof Urien Rheged
0 Ceidio Cynfarch Oer
-1 Arthwys Meirchion Gul
-2 Mar Gwrwst Ledlwm
-3 Ceneu [Ceneu]
-4 Coel Hen Coel Hen

At this point the poem goes back a generation and begins to give the pedigree of Gwynedd, starting with Maelgwn, largely in conformity with that given in HG 1, see The king-list of Gwynedd. The Venedotian sequence ends with Anarawd ap Rhodri Mawr.

[1] Wade-Evans, A. W., 1911, 30 and 74
[2] CISP LSADW/1
[3] Nash-Williams, V. E., 1950, 63
[4] Bartrum, P. C., 2009, 555

Rhydderch Hael and Rhydderch Hen

There were two Rhydderchs that have been conflated. The first was Rhydderch Hael, i.e. Rhydderch the Generous of Gwynedd, who appears in BGG 8 while the second was Rhydderch Hen, i.e. Rhydderch the Old of Strathclyde, in HG 6.  ByS 18 indicates that Dyfnwal Hen, a great-grandfather, of Rhydderch Hael according to BGG 8, was a grandson of Macsen Wledig:

Gen. ByS 18 seg.
BGG 8 Pen. 268
2 St. Lleuddad
1 Dingad Tenoi
0 Nudd Hael Lleuddun Luyddog Rhydderch Hael
-1 Senyllt Tudwal Tudclyd Elufed
-2 Cedig Cedig Peredur
-3 Dyfnwal Hen Dyfnwal Hen Morhen?
-4 Ednyfed Ednyfed
-5 Macsen Wledig Macsen Wledig

Rhydderch Hael’s sword, Dyrnwyn meaning ‘White-hilt’, is the first listed of The Thirteen Treasures of the Island of Britain.[1] The reason he was called generous was because he would give his sword to anyone who asked for it. However, it was always returned when it was realised that if it was drawn by any well-born man it would burst into flame. The Chirk Codex of the Welsh Laws states that he was one of the kings involved in the failed attempt to avenge the death of Elidir Mwynfawr.

Note, ByS 18 mentions other sons of Dingad of gen. 1 apart from St. Lleuddad. They have not been shown in the above chart. Although his father-in-law, Lleuddun of gen. 1, ruled in Edinburgh, this is a southern pedigree as indicated by the fact that the Buchedd Llewddoc Sant says Dingad was king of Bryn Buga, i.e Usk. St. Lleuddad  succeeded Cadfan as abbot of Bardsey.

Dreon Lew was the son of Nudd Hael and is mentioned in triad 31 W :

“and the Retinue of Dreon the Brave at the Dyke of Ar(f)dery(dd)”

This allows us to give a floruit for him of 573, the date of the battle of Arderydd according to the AC. His father appears in triad 2:

“Nudd the Generous, son of Senyllt”

ByA 18 mentions brothers of Rhydderch Hael, including Morgan Mwynfawr, i.e. Morgan the Wealthy. Triad 20 calls him, together with Arthur, one of the Three Red Ravagers of Britain since wherever he went neither grass nor plants grew for a period. He is said to have owned the fourth of The Thirteen Treasures of Britain. It was a chariot which would rapidly take whoever was in it wherever they wanted.

Rhydderch Hael’s father was Tudwal Tudclyd. Tudwal means ‘leader of the people’ and Tudclyd ‘defender of the people’.[2] His wife, according to Pen. 268, was Elufed and it can be seen from the above chart that they were second cousins. The Whetstone of Tudwal is the eighth of The Thirteen Treasures of Britain. While it would sharpen a brave man’s weapon, it would blunt that of a coward.

The Stanzas of the Graves tell us that Rhydderch’s grave is at Abererch, which is in Llŷn. The Cyfoesi Myrddin a Gwenddydd states that he was followed by the king Morgan Mawr ap Sadyrnin who, in turn, was followed by Urien.

The reason why the two Rhydderchs were conflated is because their fathers shared the same name and they were both descendants of Dyfnwal Hen. However, by comparing the table above with that below it can be seen their genealogies differ.

Gen. HG 6 HG 8 HG 9 HG 10 seg.
3 Morgan
2 Coleddog
1 Rhydderch Hen Urien Rheged Gwallog Morgan Fwlch
0 Tudwal Cynfarch Oer Lleenog Cyngar Brân Hen
-1 Clinoch Meirchion Gul Maeswig Gloff Dyfnwal Moelmud
-2 [Cynfelyn] Gwrwst Ledlwm [Mar] Garbanion
-3 Dyfnwal Hen [Ceneu] Ceneu [Ceneu]
-4 Coel Hen Coel Hen Coel Hen

Rhydderch was one of the kings who, according to HB 63, fought against king Hussa of Bernicia. The V. Merlini implies he fought in the battle of Arderydd. V. Kentigerni 45 indicates he died soon after the saint, probably in the year 614 and as predicted in the V. Columbae he did not die in battle.

[1] Bromwich, R., 2006, 259
[2] Bromwich, R., 2006, 508