It has been handed down that the ancestor of Tsuchida family was Shichdayu TSUCHIDA, a samurai (warrior) hailed from Tsuchida-mura, Gamo-gun, Omi Province, and the family later became a vassal of Naomasa II, the first lord of the Hikone Domain, and served as teppo-kumigashira (the head of gun troop) successively.
土田家の祖先は近江国蒲生郡土田村の出身の侍・土田七大夫で、後に初代彦根藩主・井伊直政に仕官、鉄砲組頭を代々務めた家柄と伝えられている。