The founder of the Uraku school, Nagamasu ODA, was the younger brother of Nobunaga ODA, and after the Honnoji Incident, Nagamasu first served Nobukatsu ODA, who was the second son of Nobunaga, and realized the compromise of the Battle of Komaki and Nagakute, and after Nobukatsu was punished by being deprived of his fief, Nagamasu served Hideyoshi TOYOTOMI, and after Hideyoshi died, Nagamasu served Ieyasu TOKUGAWA.
流祖織田長益は織田信長の弟で、本能寺の変の後まず信長の次男織田信雄に仕えて小牧・長久手の戦いの和議を成立させ、信雄改易後は豊臣秀吉に、秀吉没後は徳川家康に仕えた。