There are some additional records or sources that may provide additional information.  Most of these records are difficult to access, but may provide additional historical family information.

• Buddhist death registers (Kaocho) contain the name, posthumous name, death date, and sometimes the household unit of the person
• Religious Inquisition Census Records (Shumoncho) was a census that was taken periodically to classify people according to their religion and to detect illegal Christians (1640-1872).
• Pilgrimage Records (Sankaicho), which are records of persons making pilgrimages to Buddhist temples (1550-1870).
• Japan Calendars, which are roughly equivalent to feudal court records (1543-1867).
• Tombstone inscriptions, in manuscript or published form (1600-present).
• Christian Church Records (Kirisuto Kyokai Kiroku) of baptisms, marriages, and deaths kept by church clergy (1873-present).
• Emigrant passenger lists (1868-1940).
• Immigration Records containing passenger lists and ship manifests (1890s-1960).
• Military Records, such as Enshrined Patriots list (Senshisha Meibo) of heroic soldiers and patriots who are honored and enshrined at various shrines and temples (1852-1945).
• Village Records provide generational links, as well as names, places, and dates for village inhabitants (1600-1868).