Emperor Go-Reizei

Emperor Go-Reizei (後冷泉天皇, Go-Reizei-tennō; August 28, 1025 – May 22, 1068) was the 70th emperor of Japan, according to the traditional order of succession.

Go-Reizei's reign spanned the years 1045–1068.

This 11th century sovereign was named after the 10th century Emperor Reizei and go- (後), translates literally as "later"; and thus, he is sometimes called the "Later Emperor Reizei". The Japanese word "go" has also been translated to mean the "second one"; and in some older sources, this emperor may be identified as "Reizei, the second", or as "Reizei II".

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