Emperor Go-Saga

Emperor Go-Saga (後嵯峨天皇, Go-Saga-tennō; 1 April 1220 – 17 March 1272) was the 88th emperor of Japan, according to the traditional order of succession. This reign spanned the years 1242 through 1246.

This 13th-century sovereign was named after the 9th-century Emperor Saga and go- (後), translates literally as "later"; and thus, he is sometimes called the "Later Emperor Saga". The Japanese word go has also been translated to mean the second one; and in some older sources, this emperor may be identified as Saga, the second, or as Saga II.

Source: Wikipedia — https://en.wikipedia.org/wiki/Emperor_Go-Saga