Fujiwara no Saneko explained

Consort:	yes
Tōin Saneko Japanese: 洞院佶子
Succession:	Empress consort of Japan
Reign:	10 March 1261 – 2 September 1272
Spouse:	Emperor Kameyama
Issue:	Princess Kenshi Prince Tomohito Emperor Go-Uda
Royal House:	Fujiwara clan (by birth) Imperial House of Japan (by marriage)
Father:	Tōin Saneo
Mother:	Tokudaiji Eishi
Birth Date:	1245
Death Place:	Heian-kyō, Japan

Fujiwara no Saneko (藤原（洞院）佶子; 1245 – 2 September 1272), also known as Kyogoku-in (京極院),^[1] was Empress of Japan as the consort of Emperor Kameyama.

Issue:

• First daughter: Imperial Princess Kenshi (晛子内親王)
• First son: Imperial Prince Tomohito (知仁親王)
• Second son: Imperial Prince Yohito (世仁親王) (Emperor Go-Uda)

Notes and References

1. Karen M. Gerhart: Women, Rites, and Ritual Objects in Premodern Japan