Oshima asked Hideyoshi to let Kunitomo ASHIKAGA who was her brother and a grandchild of Yoshiaki ASHIKAGA and Ujihime ASHIKAGA, who was a daughter of Yoshiaki of the Koga kubo family marry, in order to revive the Ashikaga clan of the Kamakura kubo group which essentially became extinct because of the death of Yoshiuji ASHIKAGA (Koga kubo) in 1582.
お嶋は､弟で足利義明の孫でもある足利国朝と古河公方家の義明の娘である足利氏姫を結婚させ､天正10年（1582年）の足利義氏(古河公方)の死によって､実質的に断絶してしまっていた鎌倉公方系足利氏を復興させる事を、秀吉に頼んだのであった。