Temple locations are located on the Diddlefinger mapping site. If you have not been on the site, it has address lookups in english on a finely detailed Japanese map. The temples are noted by swastika symbols, and all but the smallest temples have an english and japanese character name. Unless you know which temple they attended, you must visit each temple.
I have not seen temple records.
If you have any Hisa... Wada in your line, please get in touch.