Emperor Go-Mizunoo
He was a son of regent Konoe Hisatsugu and a concubine. Motohiro was not considered a legitimate member at first, but his father Hisatsugu and his wife, Princess Shoshi, a daughter of Emperor Go-Mizunoo, had no child and Hisatsu died in Motohiro's childhood. Thus by an imperial order from Go-Mizunoo, Motohiro was installed in the Konoe lineage, and grew up under imperial protection.