Nakayama Hakudo, also known as Nakayama Hiromichi, was a Japanese martial artist and founder of the iaido style Musō Shinden-ryū. He is the only person to have received both "judan" (10th degree) and "hanshi" (master instructor) ranks in kendo, iaido, and jodo from the All Japan Kendo Federation. In addition, he held an instructor's license in Shinto Muso-ryū and a Menkyo kaiden in Shindo Munen-ryū making him the 7th soke of that system. Wikipedia
The definitive Wikipedia entry for Nakayama Hakudo. Wikipedia is the biggest multilingual free-content encyclopedia on the Internet. en.wikipedia.org/wiki/Nakayama_Hakudo
Nakayama was a famous master of iaido and the Shindo Munen-ryu sword and a friend of Morihei UESHIBA. www.aikidojournal.com/encyclopedia.php?entryID=499