(1667 â 1691) was a Japanese samurai of the Edo period. A senior retainer of the Sendai domain, he was first known as Masanaga (æÂ¿é·). Muranaga was also the fourth Katakura Kojà «rà Â. His childhood name was Sannosuke (ä¸Âä¹Âå©) later changed to Kojà «rà Â.