Arisada 【有定】3 The Japanese surnames etymology dictionary.
① Convention . Synthesis of Abe and Fujiwara. Toukyou-to Chiyoda-ku Chiyoda was in the Edo era as the shogunate of the Edo shogunate of the government agency. The shogunder tells that Mr. Abe gave Fujiwara surname from Emperor Toba of the Heian era and called it. 安倍 reference. 藤原 reference. Yamanashi-ken Uenohara-shi Ashigaki tells me that Mr. Fujiwara's descendant came from Nara-ken in 1234 (the first year of the calendar). In the vicinity of Kanagawa-ken Odawara-shi (old: Ashigami-gun, Ashigarashimo-gun) let's say that you changed the name from Fujikura surname to Muromachi era. 藤曲 reference.
② Aomori-ken Minamitsugaru-gun Originated from Fujisaki-machi . Place name with a record since the North / South morning era. "Ahn" of the real name and "Fujisaki" of Fujisaki are used. The surname was originally written as Ando from Ando Muromachi in Ando. 安倍 reference.