Emperor Go - Reizei (Japanese后 冷泉 天皇Go Reizei - tennō; * August 28, 1025, † May 22, 1068 ) was the 70th Tenno of Japan ( 1045-1068 ). His proper name was Chikahito (亲 仁). He was the son of Go - Shujaku. He had no son. After his death, his brother Go- Sanjō ascended the throne.