(Its amazing how many more search results you get when searching kanji):
http://www6.plala.or.jp/guti/cemetery/PERSON/A/uchida_ryo.html (in Japanese).
Just thought I'd ask to be sure: does the above headstone mark the actual gravesite of Uchida Ryohei or is it a sort of memorial stone? (maybe in connection to the Black Dragon Society)