白河天皇
On the same day that Taruhito was proclaimed as his heir, Shirakawa abdicated;, and Taruhito became Emperor Horikawa. The now-retired Emperor Shirakawa was the first to attempt what became customary cloistered rule. He exercised power, ruling indirectly from the Shirakawa-in (lit. "White River Mansion/Temple"); nevertheless, nominal "sesshō" and "kampaku" offices continued to exist for a long time.