Etymology and distribution of 塚倉.

Tsukakura 【塚倉】^{レベル2
About 40}  The Japanese surnames etymology dictionary.

Hyougo-ken Toyooka-shi , Oosaka-fu · Akita-ken Yokote-shi . Variant of 難波 . In Akita-ken Yokote-shi tell him that he resides from Oosaka-fu in the early Edo period. 難波 Nanba reference.