Etymology and distribution of 悦勝.

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

Kumamoto-ken , Gifu-ken · Shizuoka-ken . Terrain . 大又 's variant. It was in the Azuchi Momoyama period in Niigata-ken .

※ Kyouto-fu Kyouto-shi tells that the family name of Daeda who was in the Heian era was renamed from Omata in 765 (first year of Tenpyo Shingo). 大貞 Oosada reference.