Sometimes Katsumasa's name is written as "勝政" instead of "勝正" but according to historical materials from his time, there are only signature and write-down as "勝正," so "勝政" is wrong.
｢勝政｣と記載されることがあるが、当時の資料では｢勝正｣としての署名・記載しかなく誤りである。