In the same year, the tenth child of Masamune, Munekatsu DATE, was allowed to have a portion of the Sendai Domain (30,000 goku) and founded the Mutsu-Ichinoseki Domain.
同年、政宗の十男・伊達宗勝が仙台藩より3万石を分知され陸奥一関藩を立藩。