Just after Harusue SAIONJI died, his son, Morosue was born; However, because the baby was too small to become heir, the SAIONJI family adopted a son of Imperial Prince Arisugawanomiya Tsunahito; The adopted son, who was named Kinzumi SAIONJI, succeeded the Saionji family.
治季の死後、治季の子西園寺師季が誕生しているが、生後直後であるので、有栖川宮韶仁親王の王子を養子とし、西園寺公潔として西園寺家を相続させた。