Penarddun is a figure in
Welsh mythology, the wife of
Llyr. The Second Branch of the
Mabinogi names
Bran,
Branwen, and
Manawydan as her children by Llyr, and ascribes to her two additional sons by
Euroswydd:
Nisien, a good man, and
Efnysien, a conniving troublemaker. The
Welsh Triads call Llyr one of the Three Exalted Prisoners of Britain for his captivity at Euroswydd's hands; this likely refers to a lost tradition of the birth of Penarddun's younger sons. The
Mabinogi names Penarddun as a daughter of the ancestor
Beli Mawr, but the genealogy is confused; it is possible she was meant to be his sister rather than daughter.
