The Tsuigo of Shirakawa-in comes from the name of the residence from which he conducted his cloistered rule after abdicating the throne (sometimes Tsuigo is considered to be a type of pothumous name, however strictly speaking these are two different names).
譲位後の院政時の住居の名称により、白河院と追号された（追号も諡号の一種とする場合もあるが、厳密には諡号とは異なる）。