Editing Gwern (section)

===Aftermath===
As a result of Efnysien's "unspeakable crime", the two hosts rise up against each other and a vicious fighting begins. In the ensuing battle, the Irish at first have the advantage because of the magic cauldron. When the Irish dead are placed in it, they came to life and were able to fight as well as ever, though they cannot speak. Efnisien lies down among the dead and is placed in the cauldron, then breaks it, bursting his heart and dying in the process. The Welsh eventually win the war, but only seven men survived. Bendigeidfran himself is dying from a mortal wound in the foot, and orders that his head should be cut off and buried in [[London]]. When the survivors return to Britain, Branwen dies of grief from believing that she was the cause of the war; she is buried beside the [[River Alaw]] in [[Anglesey]].

For seven years the seven survivors, amongst them Manawydan and [[Pryderi]], stay in [[Harlech]], where they are entertained by Bendigeidfran'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, one of the men 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]].