Genealogy
Before his ascension to the Chrysanthemum Throne, his personal name (his imina) was Motohito-shinnō (幹仁親王?).
Go-Komatsu was the first son of the Northern Pretender Emperor Go-En'yū. His mother was Tsūyōmonin no Itsuko (通陽門院厳子), daughter of the Lord Keeper of the Privy Seal Sanjō Kimitada (三条公忠).
- Consort: Sukeko (資子) Daughter of Hino Sukekuni (日野資国)
- First son: Imperial Prince Mihito (実仁親王) (Emperor Shōkō)
- Second son: Ogawa-no-miya (小川宮) (Emperor Shōkō's crown prince)
- First daughter: Princess Riei
- Adopted son: Prince Hikohito (彦仁王), son of Imperial Prince Sadafusa, Prince Fushimi (伏見宮貞成親王), grandson of the Northern Pretender Emperor Sukō, became Emperor Go-Hanazono
- Consort: Unknown (the daughter of a retainer from the Southern Court)
- Ikkyū Sōjun
He was named after Emperor Kōkō, who had the alternate name Komatsu, because they both returned the throne to their families, in the case of Emperor Go-Komatsu, by defeating his Southern Court rivals, and in the case of Emperor Kōkō, by succeeding his elder brother's grandson, Emperor Yōzei.
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