Nagasaka 【永坂】5 The Japanese surnames etymology dictionary.
① Shizuoka-ken Kakegawa-shi Haragawa (Hararagawa) · Originated from Kitahara river in Fukuroi-shi, Japan's small book. A place name with a record since the Warring States Period. Yamaguchi-ken Mine-shi It was in the Edo era in the Aki - cho town.
② Korean type . Originated in Gangwon-myeon province (Wonju), Republic of Korea. Uses "original" of Haruho. There is a record of naturalization on Gifu - ken Gifu - shi on November 24, 1978. The real name is a neighborhood. Mr. Honjo comes from the original era Sina. 辺 reference. There is also another name.