It is thought that 'Yuzo Shiba', whose name only remains as a master of literature, was one of these two people; however, because the name Ennosuke appears many times on other records and there is no evidence that he changed his name, it is assumed that Ryousaku Shiba and Yuzo Shiba were one and the same person.
文学師範としてのみ名の残る「斯波雄蔵」はこのいずれかと考えられるが、縁之助については以後の記録も多く見られるため名を変えた形跡が無く、司馬良作＝斯波雄蔵である、と推測される。