http://fireemblem.wikia.com/wiki/Lon%27qu
Lon'qu hails from Regna Ferox, but was born in Chon'sin. His supports reveal that he lived in the slums as a child, and that his first friend was a young girl his age named Ke'ri. However, Ke'ri was killed by bandits and her parents blamed him for her death, though later in his conversations with Cherche, he learns that Ke'ri's parents no longer hate him for her death, and have forgiven him. Out of shame, Lon'qu fled Chon'sin and arrived in Ferox, where he trained to become stronger. After honing his skills for many years, Lon'qu caught the attention of the West-Khan Basilio. Impressed by his swordsmanship, Basilio made Lon'qu his champion during the Ferox tournament.