Schlüsselburg, a town and prison-fortress of Russia, the fortress being on a rocky islet in the Neva where it issues from Lake Ladoga, and the town (pop. 5542) on the right bank of the river. Here the dethroned Czar Ivan VI. was murdered by authority, after twenty-three years' imprisonment in this and other fortresses.
Schlüsselburg
Chambers's Encyclopaedia, Volume 9: Bound to Swansea, p. 214
Source scan(s): p. 0225