Morinori was the son of a leader in Etchû province's ikko and was himself at first a retainer of the Jinbo family. When Uesugi Kenshin took control of Etchû province in the 1560's, Morinori joined him. He would enter the service of Sassa Narimasa when the Oda invaded Etchû in 1581 and went on to serve him at the battle for Suemori castle in Noto province in 1584. When Narimasa surrendered to the Toyotomi and lost his Etchû domain, Morinori went on to serve Maeda Toshiie of Kaga province.
- Initial text from Sengoku Biographical Dictionary (Samurai-Archives.com) FWSeal & CEWest, 2005