The Cauldron of Rebirth appears in the Second Branch of the Mabinogi, a medieval Welsh prose tale about Branwen, Bendigeidfran, and a disastrous conflict between Britain and Ireland.
The cauldron in the tale
The vessel is given to the Irish king Matholwch after it reaches Britain with the giant Llasar Llaes Gyfnewid and his wife. During the war, Irish fighters place their dead in the cauldron. They rise the next day able to fight again, but they cannot speak.
The silent revived warriors make the object more troubling than a simple source of immortality. It restores bodies for continued violence without returning full social identity or speech.
Destruction and comparison
Efnisien hides among the Irish dead and is thrown into the cauldron. He stretches until the vessel breaks, dying in the act and ending its military use. His sacrifice follows his own earlier violence, making the episode part of the tale’s pattern of injury, retaliation, and ruin.
This cauldron is not automatically the same as the Dagda’s inexhaustible cauldron in Irish tradition, and it is not the historical Gundestrup Cauldron. Comparisons may be useful, but the objects come from different texts, periods, and kinds of evidence.