德川家綱
Nagahito-shinnō became emperor when his emperor-brother died. This death left the throne vacant and the succession ("senso") was received by the new monarch. Shortly thereafter, Emperor Go-Sai is considered to have acceded to the throne ("sokui"). The events during his lifetime shed light on his reign. The years of Go-Sai's reign correspond with a period in which Tokugawa Ietsuna was the leader at the pinnacle of the Tokugawa shogunate.