As he appeared on stage even after he was stricken with paralysis and became disabled, so called yoi-yoi, he was called 'Yoi-Mitsu' (literally, physically challenged Mitsugoro).
中風にかかり、体が不自由になって以後も舞台に上がったので、ヨイヨイから「ヨイ三津」と呼ばれた。