He had a courageous personality, and when he served as the guard of Imperial Palace who was in charge of near waterfall in the palace, Nobutsura caught a burglar in the Tokiwa Palace, which made him appointed as sahyoe no jo.
人となりは胆勇あり、滝口の武士として常磐殿に入った強盗を捕らえて、その功績により左兵衛尉に任命された。