Etymology and distribution of 天上.

Tenjou 【天上】^{レベル3
About 90}  The Japanese surnames etymology dictionary.

延安 Nobuyasu reference.

Amagami 【天上】^{レベル3
About 90}  The Japanese surnames etymology dictionary.

Kagoshima-ken , Fukuoka-ken , Chiba-ken .

① Kagoshima-ken Minamisatsuma-shi Koneda Takeda Birth of Ayukawa. There was Ayukawa gate of the gate division system in the Edo period in the same place.

② Niigata-ken Murakami-shi The birth of Shimogawa river (Ikawa) · Shimogawa river. A place name with a record since the Edo period. The place name was also called "Ayukawa".

③ Akita-ken Yurihonjou-shi Born of the Higashiyu River. A place name with a record since the Warring States Period. My last name also pronounced Aikawa.