Yasumasa SAKUMA was a younger brother of Morimasa SAKUMA, busho (Japanese military commander), who also went by the name of 'Onigenba' (terrifyingly brave Genba like ogle) under Nobunaga ODA.
佐久間安政は、織田信長のもとで「鬼玄蕃」の異名をとった武将佐久間盛政の弟である。