Note 39 — Chapter 3 The Death of Alexander I. and the Fourteenth of December—Moral Awakening—The Terrorist Bouchot—My Kortcheva Cousin
Constance Garnett translation
Mirovitch in 1762 tried to rescue from the Schlüsselburg the legitimate heir to the Russian throne, known as Ivan VI., who perished in the attempt. It is said that Catherine had given orders that he was to be murdered if any attempt were made to release him. Mirovitch was beheaded.