Kotohito (Japanese: 政仁; IPA: [ko̞to̞çito̞]; 29 June 1596 – 11 September 1680, posthumously honored as Emperor Go-Mizunoo (後水尾天皇, Gomizunō Tennō; [ɡo̞mʲizɨno̞ː tẽ̞nːo̞ː]), was the 108th Emperor of Japan, according to the traditional order of succession. Go-Mizunoo's reign spanned the years from 1611 through 1629, and he was the first emperor to reign entirely during the Edo period.
This 17th-century sovereign was named after the 9th-century Emperor Seiwa, sometimes posthumously referred to as Mizunoo (水尾) because this is the location of his tomb, while go translates as "later", and thus, he could be called the "Later Emperor Mizunoo". The Japanese word go has also been translated to mean the "second one", and in some older sources, this emperor may be identified as "Mizunoo, the second" or "Mizunoo II".
Before Go-Mizunoo's accession to the Chrysanthemum Throne, his personal name (his imina) was Kotohito (政仁) or Masahito. He was the third son of Emperor Go-Yōzei and his consort, Konoe Sakiko. Prince Kotohito had 11 full siblings (7 sisters and 4 brothers).
He resided together with concubines in the Kyoto Imperial Palace. He had 33 children with his empress consort and 6 concubines.
Empress (Chūgū): Tokugawa Masako (徳川和子, 23 November 1607 – 2 August 1678), later known as Tōfuku-mon'in (東福門院), daughter of Tokugawa Hidetata and Lady Oeyo
Second Daughter: Imperial Princess Okiko (興子内親王, 9 January 1624 – 4 December 1696), later Empress Meishō
Third Daughter: Princess Onna-ni (女二宮, 14 October 1625 – 2 July 1651), Legal Wife of Konoe Hisatsugu
Second Son: Prince Sukehito (高仁親王, 31 December 1626 – 11 July 1628)
Third Son: Prince Waka (若宮, b.1628)
Fourth Daughter: Imperial Princess Akiko (女三宮昭子内親王, 13 October 1629 — 18 June 1675)
Sixth Daughter: Imperial Princess Yoshiko (女五宮賀子内親王, 21 July 1632 – 2 August 1696) married Nijō Mitsuhira
Seventh Daughter: Princess Kiku (菊宮, 1633–1634)
Lady-in-waiting (Naishi-no-Suke): Yotsutsuji Yotsuko (四辻与津子, d. 9 January 1639), later known as Meikyō'in (明鏡院), was the daughter of Yotsutsuji Kinto (四辻公遠)
First Son: Prince Kamo (賀茂宮, 21 November 1618 – 4 November 1622)
First Daughter: Princess Bunchi (文智女王, 30 July 1619 – 4 February 1697 ), Wife of Takatsukasa Norihira
Lady-in-waiting (Naishi-no-Suke): Sono (Fujiwara) Mitsuko (園光子) 1602– 6 March 1656, later known as Mibu'in (壬生院), Sadaijin, was the daughter of Sono Mototada (園基任)
Fourth Son: Imperial Prince Tsuguhito (紹仁親王, 20 April 1633 – 30 October 1654), later Emperor Go-Kōmyō
Sixth Son: Imperial Prince Priest Syuchō (守澄法親王, 3 September 1634 – 12 June 1680), abbot of Kan'ei-ji in Ueno