Urrathon Goodbrother is the son of Andahar Goodbrother and Thyra Greyjoy, and the current Lord of Hammerhorn. He is the second son of his father, but inherited the seat after his brother's abdication.
He is the captain of the Black Vanguard, and head of House Goodbrother. The Vanguards - the self-chosen name of the Hammerhorn fleet - do him fealty.
Urrathon Goodbrother was born in Hammerhorn at the dawn of the year 169. The first year of his life was quiet and simple, peaceful in the arms of his mother. This was not to last; for from that moment on, the second son of Andahar would know little peace.