Prince Oi had a strong relationship with Nakamaro, having married AWATA no Morone, a widow of FUJIWARA no Mayori who was a daughter of Nakamaro, and lived in Nakamaro's private house.
大炊王は仲麻呂の子・藤原真従（まより）の未亡人である粟田諸姉を妻とし、仲麻呂の私邸に住むなど、仲麻呂と強い関係を持っていた。