Лжедмитрий I
Shuisky then turned against the false Dmitry and brought about his death (in May 1606) by stating that the real Dmitry had indeed been slain and that the reigning tsar Dmitriy (False Dmitriy I) was an impostor. After Dmitriy's death, Shuisky's adherents proclaimed him tsar, on 19 May 1606. He reigned until 19 July 1610, but was never generally recognized. Even in Moscow itself he had little or no authority, and he only avoided deposition by the dominant boyars because they had no one to replace him with.