Etymology and distribution of 渡成.

Tonari 【渡成】^{レベル2
About 30}  The Japanese surnames etymology dictionary.

Ibaraki-ken Kitaibaraki-shi . 小川 surname. 小川 Ogawa reference.

※ Saga-ken Karatsu-shi Dongcheng interior was in the Edo period in the Karatsu clan of the clan government office.

Watanari 【渡成】^{レベル2
About 30}  The Japanese surnames etymology dictionary.

渡成トナリ参照。