Roer (red) besides other departments in the North of the French Empire, 1811
Map of the Roer departement, circa the early 1800s.
View of Tegelen
Coat of arms of the German municipality of Jülich
Flag of (the former municipality of) Tegelen
in 1988

After Napoleon was defeated in 1814, the department was divided between the United Kingdom of the Netherlands (left bank of the Meuse and a strip along its right bank including Gennep, Tegelen and Sittard, in present-day Dutch Limburg) and the Kingdom of Prussia (Province of Jülich-Cleves-Berg, now part of North Rhine-Westphalia, Germany).

- Roer (department)

In Napoleonic times, the former duchy of Jülich became part of the Roer department.

- Tegelen

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Map of the Lower Rhenish–Westphalian Circle around 1560, Duchy of Jülich highlighted in red

Duchy of Jülich

The Duchy of Jülich (Herzogtum Jülich; Hertogdom Gulik; Duché de Juliers) comprised a state within the Holy Roman Empire from the 11th to the 18th centuries.

The Duchy of Jülich (Herzogtum Jülich; Hertogdom Gulik; Duché de Juliers) comprised a state within the Holy Roman Empire from the 11th to the 18th centuries.

Map of the Lower Rhenish–Westphalian Circle around 1560, Duchy of Jülich highlighted in red
Nideggen Castle
Map of the Lower Rhenish–Westphalian Circle around 1560, Duchy of Jülich highlighted in red
map of the Duchy of Jülich-Berg from Theater of the World, or a New Atlas of Maps and Representations of All Regions, edited by Willem and Joan Blaeu, 1645

In 1794 Revolutionary France occupied the Duchy of Jülich (Duché de Juliers), which became part of the French département of the Roer.

In 1815, following the defeat of Napoleon, the duchy became part of the Prussian Province of Jülich-Cleves-Berg (after 1822 part of the Prussian Rhine Province), except for the cities Sittard and Tegelen, which became part of the United Kingdom of the Netherlands.