japanese last names that begin with a r

[gunblade007]

wow i didn't know it was hard finding japanese last names that begins with r. i through i could use richardson since i know alot of anime shows in america has characters with american names. but i couldn't use it if i wanted her family to be a ninja clan since the richardson clan wouldn't sound like a good ninja clan name. i was thinking i could maybe use the last name of goemon. since i was thinking of having goemon ishikawa be her ancestor.
-Joe