The 'Yamanouchi-Sudo family tree' refers to the one recorded in "Zoku Gunsho Ruiju" (The Collection of Historical Sources, second series), in which there is a description that Toshimichi, a son of Yoshimichi, 'lived in the Sagami Province and used the name of Yamanouchi Takiguchi as his go (byname).'
「山内首藤系図」は『続群書類従』に収録されているものを指すが、そこでは義通の子俊通に「相模国に住み、山内滝口を号す」とある。