The battle of Crug Dyved

In the Book of Taliesin we have the poem entitled Trawsganu Kynan Garwyn mab Brochvael. which has the following line:

kat yg cruc dymet. aercol ar gerdet.
A battle in Crug Dyfed, Aergol flying.

This poses a problem of chronology as Aergol Lawhir was of gen. -2, see Why Bartrum’s dating of the Demetian Arthur is wrong, whereas Cynan Garwyn was of gen. 1, see HG 22 below.

Gen. HG 22
 
2 Selyf Sarffgadau
1 Cynan Garwyn
0 Brochwel Ysgithrog
-1 Cyngen Mawgan Pasgen Cateyrn
-2 Cadell Ddyrnllug

The chronology indicated by the above table looks sound for the following reasons. The Annales Cambriae tells us that Selyf died at the battle of Chester in the year 613:

Gueith Cairlegion, et ibi cecidit Selim filii Cinan.

The Annals of Tigernach, refers to the same incident under the 611:

Cath Caire Legion ubí sancti occissi sunt, et cecidit Solon mac Conaín rex Bretanorum et Cetula rex cecidit. Etalfraidh uictor erat, qui post statim obít.

This statement provides the added information that another death at Chester was that of Cadwal Crysban, the king of Rhos, who would have been younger than Selyf. The victor was Aethelfrith. Triad 25 describes Selyf as one of the Three Battle-Rulers of the Island of Britain.

Cynan’s daughter, Tandreg Ddu, was the wife of Cadfan and the mother of Cadwallon. Brochwel was married to Arddun ferch Pabo Post Prydyn and was the son of Cyngen by Tudglid ferch Brychan.

However, if we now look at HG 27 we can see that Cynan and Cyngen have been interchanged, see The Powysian lineage. This is likely to be a corruption. Is it possible that a similar thing happened with the poem and a battle fought by Cyngen, who was of the same generation as Aergol, was wrongly attributed to Cynan? If this were to be the case it suggests Taliesin was not the author.

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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