"Copy of Submitted Document about Ancestor" reads "Ancestor, Taro Goro SAKAMOTO was born in Yamashiro no kuni, although the details such as which county and village in Yamashiro no kuni are yet to be known. He escaped a war disaster and arrived at and settled in Saitani-mura village of Nagaoka-gun county.
坂本家が主君に差し出した『先祖書指出控』には、「先祖、坂本太郎五郎、生国山城国、郡村未だ詳らかならず、仕声弓戦之難を避け、長岡郡才谷村に来住す。