Family heads during the beginning of the Edo period, Mototo SONO and his son Motonari SONO sent their daughters (Mibuin and Shinkogimonin) to the Emperor Gomizunoo's kokyu (empress's residence) and the daughters gave birth to Emperor Gokomyo and Emperor Reigen respectively.
江戸時代前期の当主園基任・園基音親子はいずれも娘（壬生院・新広義門院）を後水尾天皇の後宮に入れており、それぞれ後光明天皇と霊元天皇両天皇を出産した。