Hychddwn Hir ("Dark-Red Pig, the Tall" from the Welsh ''hwch'', "Swine" and ''hir'', "Long") appears in the fourth of the Four Branches of the Mabinogi and is one of the sons of

Gwydion Gwydion fab Dôn () is a magician, hero and trickster of Welsh mythology, appearing most prominently in the Fourth Branch of the ''Mabinogi'', which focuses largely on his relationship with his young nephew, Lleu Llaw Gyffes. He also appea ...

and Gilfaethwy, brothers who were transformed into pigs as punishment for rape. They had two other sons:

Hyddwn In Welsh Mythology, Hyddwn (from the Welsh ''hydd'', "Stag") appears in the fourth of the Four Branches of the Mabinogi and is one of the three sons of Gwydion and Gilfaethwy. As punishment for the rape of Goewin, Math banished his nephews, turni ...

and

Bleiddwn Bleiddwn (from the Welsh ''blaidd'', "Wolf") appears in the fourth of the Four Branches of the Mabinogi and is one of the three sons of Gwydion and Gilfaethwy. As punishment for the rape of Goewin, Math banished his nephews, turning them into a ...

References

{{Celtic mythology (Welsh) Welsh mythology