Editing Brân the Blessed (section)

==Role in the ''Mabinogion''==
The Irish king [[Matholwch]] sails to [[Harlech]] to speak with Brân the Blessed, high king of the [[Prydain|Island of the Mighty]] and to ask for the hand of his sister [[Branwen]] in marriage, thus forging an alliance between the two islands. Brân agrees to Matholwch's request, but the celebrations are cut short when [[Efnysien]], a half-brother of Brân and Branwen, brutally mutilates Matholwch's horses, angry that his permission was not sought in regard to the marriage.<ref name="EoM">{{cite book |last=Cotterell |first=Arthur |title=The Encyclopedia of Mythology |year=2006 |publisher=Anness Publishing Ltd |pages=107 }}</ref> Matholwch is deeply offended until Brân offers him compensation in the form of a [[Pair Dadeni|magic cauldron]] that can restore the dead to life. Pleased with the gift, Matholwch and Branwen sail back to Ireland to reign.

Once in Matholwch's kingdom, Branwen gives birth to a son, [[Gwern]], but Efnysien's insult continues to rankle among the Irish, and eventually Branwen is mistreated, banished to the kitchen<ref name="EoM"/> and beaten every day. She tames a starling and sends it across the [[Irish Sea]] with a message to her brother Brân. Brân wades across the Irish Sea to rescue her with his brother [[Manawydan]] and a huge host of warriors, mustered from the 154 [[cantref]]i of [[Great Britain|Britain]], following in ships. The Irish offer to make peace, and build a house big enough to entertain Brân, but they hang a hundred bags inside, supposedly containing flour but actually containing armed warriors. Efnysien, suspecting treachery, reconnoitres the hall and kills the warriors by crushing their skulls. Later, at the feast, Efnysien, again feeling insulted, murders Gwern by burning him alive, and a vicious battle breaks out. Seeing that the Irish are using the cauldron to revive their dead, he hides among the Irish corpses and is thrown into the cauldron by the unwitting enemy. He destroys the cauldron from within, sacrificing himself in the process.

Only seven men survive the conflict, among them [[Manawydan]], [[Taliesin]] and [[Pryderi|Pryderi fab Pwyll]], prince of [[Kingdom of Dyfed|Dyfed]], Branwen having herself died of a [[broken heart]].<ref name="ECMF2">{{cite book |last=Monaghan |first=Patricia |title=The Encyclopedia of Celtic Mythology and Folklore |year=2004 |publisher=Facts on File, Inc |pages=56 |isbn= 0-8160-4524-0 }}</ref> The survivors are told by a mortally wounded Brân to cut off his head and to return it to Britain.<ref name="ECMF2"/> For seven years the seven survivors stay in Harlech, where they are entertained by Brân's head, which continues to speak. They later move on to Gwales (often identified with [[Grassholm Island]] off Dyfed) where they live for eighty years without perceiving the passing of time. Eventually, Heilyn fab Gwyn opens the door of the hall facing Cornwall and the sorrow of what had befallen them returns. As instructed, they take the now silent head to the Gwynfryn, the "White Hill" (thought to be the location where the [[Tower of London]] now stands), where they bury it facing [[France]] so as to ward off invasion. The imagery of the talking head is widely considered to derive from the ancient Celtic "[[Celts#Warfare and weapons|cult of the head]]"; the head was considered the home of the soul.<ref name="EoM"/>