Heinsberg

Heinsberg was a lordship of the Holy Roman Empire centred on its castle west of Cologne. In 1337 Dietrich of Heinsberg ruled it after inheriting Loon and Chiny in 1336.

After the battle of Baesweiler in 1371, Heinsberg followed Jülich; Liège later reclaimed Loon and Chiny. Lord Johann II fought at Kleverhamm in 1397 and inherited a quarter of Jülich in 1423. The male line ended in 1448, and in 1484 the Duke of Jülich-Berg bought the lordship and made it an administrative district.