It was a local ruling family, which handed down the genealogy in which Takaakimaru, the second son of Sadato ABE, was figured as its ancestor, and dominated Tsugaru region and an extensive surroundings from the westward of Akita Country of Dewa Province to the eastward of Shimokita Peninsula.
安倍貞任第2子の高星丸を始祖とする系譜を伝え、津軽地方を中心に西は出羽国秋田郡から東は下北半島までを領した豪族である。