Etymology and distribution of 出来岡.

Dekioka 【出来岡】^{レベル2
About 10}  The Japanese surnames etymology dictionary.

Oosaka-fu .

① Oosaka-fu Kishiwada-shi swamp (Numa (Old: Numazuma)) Origin of the town. A place name with a record since the Kamakura period. The surname was initially written as "swamp".

② Origin of Kanagawa-ken Zushi-shi Numazuma. A place name with a record since the Warring States Period.