Etymology and distribution of 湯張.

Touchou 【湯張】^{レベル1
Very rare}  The Japanese surnames etymology dictionary.

Yamagata-ken Shinjou-shi . Terrain . Saitama-ken Hiki-gun Yoshimi-machi In Japanese names, Yamagata-ken Shinjou-shi tells that Genji's lost person has come to Higino and said that "Hatake is better". Estimated in the Kamakura period. 源 Minamoto reference.

※ Yamagata-ken Shinjou-shi In Hagino Tsuchiya there is a descendant of Yatari Goro who was a fellow of the Heike. 平 Taira reference.