Baltic German duchy and Polish-Lithuanian Commonwealth vassal; briefly maintained a colonial empire with possessions in Tobago and Gambia under Duke Jacob Kettler.
Annexed by the Russian Empire on 24 October 1795 as part of the Third Partition of Poland, when the duchy's Landtag pledged allegiance to Russia and Duke Peter von Biron abdicated, dissolving the duchy into the Courland Governorate.
The atlas holds 5 border frames for Duchy of Courland and Semigallia — the shape you scrub through changes in 1561 · 1625 · 1675 · 1708 · 1749.
Covers the Duchy of Courland and Semigallia within the broader Baltic regional history; Cambridge University Press; confirmed via Cambridge UP and Goodreads.