The name 'Jusuke HIRAMA' appears among the 30 family members led by the Serizawa family head, Sadamoto SERIZAWA (Kamo SERIZAWA's father), in 1844, to take part in the military training of Mito clan.
天保15年（1844年）に芹沢家当主芹沢外記貞幹（芹沢鴨の父）が一族30人を率いて水戸藩の軍事調練に参加した中に「平間重助」の名がみえる。