Until 1914, he gave himself the first name of Ryozaburo (良三郎), and there a theory that this is his real name, while another says that he changed his name to Ryozaburo at some stage although he was named Ryuzaburo when he was born.
1914年（大正3年）までは名を良三郎と名乗るが、この名を本名とする説と、出生時に龍三郎と名付けられたが良三郎に改名していたとする説がある。