He is introduced as 'Kawachi hangan' (judge or magistrate) in some historical materials, but because his father MINAMOTO no Yoshitada was once called so, it is now accepted that they are confused.
「河内判官」と記載した史料もあるが、父の源義忠も一時、河内判官と呼ばれていたため、混同とするのが通説。