The son of Moniwa Mototoshi, he served as a retainer of the Date clan of Sendai han. Also known by his common name, Shinsuke (新助), Motonori married the daughter of Moniwa Masumoto, the head of the main house of Moniwa.
Motonori, son of Moniwa Mototoshi, held a position as a retainer for the Date clan in Sendai han. He was also known by his nickname, Shinsuke (新助), and married the daughter of Moniwa Masumoto, who headed the main house of Moniwa.