[20b] Lleision was one of the palaces of the princes of Powys, corruptly now called Llysin; and the park about it is called Llysin-park, the patrimony of Lord Powys.
[21a] The battle of Llwyvein was fought by Urien Reged and his son Owain, against Ida king of the Northumbrians. It is celebrated by Taliesin in a poem, entitled Gwaith Argoed Llwyvein, i.e. the battle of Argoed Llwyvein.
[21b] Eurgain, Northop in Flintshire, so called from Eurgain, the daughter of Maelgwn Gwynedd.
[21c] Demetia. This expedition of Llewelyn-ap-Iorwerth was against the Flemings and Normans, of which there is an account in Powel’s History of Wales, p. 277, 278.
[22a] Llan Huadain, the name of a place in Pembrokeshire.
[22b] Cilgeran, the name of another place in the same county, near the river Teivi.
[22c] Llywarch Hen, the son of Elidir Lydanwyn a nobleman of North Britain, and cousin german to Urien Reged king of Cumbria; he was a great warrior, and fought successful against the Saxons; but fortune at last favouring the Saxons, he was obliged in his old age to retire to Wales. He had twenty-four sons, who wore golden chains, and were all killed in battles against the Saxons. Llywarch Hen was a noted Bard, his works are extant, wherein he celebrates the noble feats of his sons, and bewails his misfortunes, and the troubles of old age, especially in distress.
[22d] Tanad is the name of a river in Montgomeryshire, which emptieth itself into the Severn.
[22e] Nudd Hael, or the Generous, was a nobleman of North Britain remarkable for his liberality.
[22f] Huail was a brother of Gildas, the son of Caw, and a noted warrior. His brother Gildas was the author of the Epistle De excidio Britanniæ.