Etymology and distribution of 五十立.

Ikadate 【五十立】^{レベル1
Very rare}  The Japanese surnames etymology dictionary.

Mie-ken Matsusaka-shi . Birth of Mie-ken Matsusaka-shi Imawa-cho. A place name with a record since the Kamakura period. The place name was also written as "Inami" and "Isa Waza".