When, after Yoritomo died, no shogun became available from the Minamoto clan linage, her great-grandson FUJIWARA no Yoritsune, was brought into the fourth shogun post based on the reason that he was in the lineage of Bomon-hime, a sister of Yoritomo.
頼朝の死後、鎌倉幕府で源氏の将軍が断絶すると、頼朝の姉妹である坊門姫の血筋である事によって、曾孫の藤原頼経が4代将軍に迎えられている。