It is uncertain, however, whether Tsurayuki NISHIKI really existed, and whether Ryosuke NISHIKI, who did exist, was related to Kiyoyuki MIYOSHI and Shigeaki MIYOSHI (and it is certainly not true to state that Shigeaki was a great-grandson of Kiyoyuki as depicted in the family line of 'Kiyoyuki MIYOSHI - Ryosuke NISHIKI - Tsurayuki NISHIKI - Shigeaki MIYOSHI').
だが、錦連行の実在性は確かではなく、実在人物である錦良助と三善清行・三善茂明との血縁関係の有無も不明である（勿論、「三善清行－錦良助－錦連行－三善茂明」という茂明を清行の曾孫とする系譜は事実ではない）。