Although the family first referred to itself as the Arakawa clan, Yasutsugu INA, a grandson of Yasuuji ARAKAWA who had been given a part of Ina County, Shinano Province, by the Seii taishogun (literally, "great general who subdues the barbarians") Yoshihisa ASHIKAGA, called himself Kumazo INA.
初め荒川氏を称してたが、荒川易氏のときに征夷大将軍足利義尚から信濃国伊那郡の一部を与えられ、易氏の孫の伊奈易次の代に伊奈熊蔵と号した。