Loreon Lannister

Only son of Lord Jason Lannister and Lady Johanna of House Westerling, four years old at his father's death at the Battle of the Red Fork in 130 AC and so Lord of Casterly Rock from the cradle, with his mother Johanna ruling the westerlands in his name. He was kept inside the Rock through the long years of the ironborn raids on the western coast, was the lord in whose name his mother and Ser Leo Costayne later turned the war back upon the iron islands, and grew at last into his father's seat in the early reign of King Aegon III Targaryen.