1647 CE.
Shown on the map at 50.422°, 2.780°.
The Siege of Lens was an episode of the Thirty Years' War. It was organised in 1647 by Jean de Gassion, Marshal of France.
Text from the Wikipedia article Siege of Lens, licensed CC BY-SA 4.0.
HistoryLayer draws the world as it was in any year from 123,000 BCE to 2026. Move the slider and the borders redraw for that year; the map carries 23,890 events, 12,790 people, 837 wars and 13,183 cities, each one readable in place. Signing in is optional and lets you keep what you find.