Thereafter, the IRAKO family moved to Dewa Province and became vassals of the Mogami clan, producing many senior vassals of the clan such as Sogyu IRAKO and Danjo IRAKO, and so on.
その後、伊良子一族は出羽国に移住して最上氏の家臣となり、伊良子宗牛・伊良子弾正ら、最上家の重臣を輩出した。