"the Radiant": The lord of Penllyn who plotted with Blodeuwedd to kill Lleu. Appears in Math fab Mathonwy. Children of Llŷr Llŷr, the patriarch of the other family, is possibly a borrowing of the Irish sea-god Ler. A foreign origin is further suggested by his epithet Llediaith ("half-speech"). His wife was Penarddun. According to the Mabinogion she was the mother of his three children, plus two others by Euroswydd. The Mabinogi name her as a daughter of Beli Mawr, though this may be an error for sister. Penarddun and Llŷr's children include: Brân the Blessed. He appears most prominently in Branwen ferch Llyr, in which is a giant and King of Britain. In the text he invades Ireland to come to the aid of his sister, who has suffered abuse at the hands of the Irish king Matholwch. He is killed in battle by a poisoned spear to the foot. His head was buried in London, and guarded Britain from foreign invasion until its unearthing by King Arthur some time later. Also appears frequently in medieval Welsh poetry, as well as in the Welsh Triads and Cad Goddeu. John T. Koch has suggested a number of parallels between Brân and the historical Gaulish chieftain, Brennus, who invaded the Balkans in the third century B.C. His son Caradog, who is left to defend Britain in his father's absence. He is killed when his uncle Caswallawn seizes his father's crown. Manawydan, Bran's younger brother, who fights alongside him in Ireland. He is one of only seven men to survive the final battle, and returns to live in Dyfed with fellow survivor Pryderi. He refuses to make his claim on the British throne which has been usurped by his cousin Caswallawn. He marries Rhiannon in the Third Branch, and rescues Dyfed from the enchantment of the malignant wizard Llwyd ap Cil Coed. He is widely considered to be cognate with the Irish sea god Manannán mac Lir. Branwen, The family's only daughter. Her abuse at the hands of her husband Matholwch is the catalyst for a catastrophic war between Britain and Ireland which eventually leads to the deaths of three of her brothers, her son and her husband. She dies of a broken heart after witnessing the battle. Her infant son Gwern, by Matholwch, who is murdered by his uncle Efnysien. Other figures associated with the Children of Llŷr include: Euroswydd, the father