The Houses of the Mabinogi
The Houses of Dôn and Llyr are connected by marriage through Llyr's wife, Penarddun but are diverse in their stories and personalities.
Dôn collage to the bottom left, Llyr collage to the bottom right.
The House of Dôn, apart from the mother goddess herself, boasts two powerful magicians: Math and Gwydion. Also the Goddess of the Wheel of the Year, Arianhod, and her estranged son Lleu Llaw Gyffes are popular characters of this house. The children of Dôn also include Amaethon, the god of agriculture and who started the 'Cad Goddeu' or Battle of the Trees, where all the children declared war against Arawn, King of Annwn. They only won due to Gwydion's expert wizardy with his summoning of a tree army. Finally, the grandson of Dôn, Gwyn, son of Nudd, is popular in Welsh folklore as the king of the Tylwyth Teg (fairy-folk) and leader of the Wild Hunt.
The House of Llyr is smaller in sized but full of tragedy.
Llyr has two sons and one daughter, Branwen. She gets betrothed to the King of Ireland, Matholwch. On return to ireland though, she gets forced into the kitchens. After hearing of his sisters plight, Bran the Blessed, a giant and the King of Britain, wades across the Irish Sea with an army of Welshmen, including his brother and trusted advisor Manawydan. After the tragic death of Branwen's son Gwern, the Welsh and Irish fight until no-one is left but Bran, Branwen, Manawydan and six Welshmen. Unfortunately, Bran finds a poison arrow in his leg and as he is dying, asks Manawydan to cut off his head and take it back to Wales. Upon their return, Branwen dies of a broken heart from her brother and sons death.