Urrigon Greyjoy, affectionately known as Urri, was the fourth son of Lord Quellon Greyjoy by his second wife.
Urrigon was close with his younger brother Aeron, and the two were great friends. They did the kind of things that brothers do, such as play at the finger dance together. During one game, Aeron threw an axe that shaved off part of Urrigon's hand. Quellon's third wife, a lady of House Piper. She tasked her maester with sewing Urrigon's fingers back on, instead of treating it by burning it with fire and salt water.
An infection set in, and despite taking off Urrigon's arm, he still died aged fourteen. Quellon died during Robert's Rebellion, and his eldest surviving son, Balon, returned as the new Lord Reaper of Pyke. He had the maester's fingers chopped off and forced his step mother to sow them back on. The maester died raving.