Styrum

Styrum was an immediate lordship in the Holy Roman Empire, located in Mülheim an der Ruhr, North Rhine-Westphalia, Germany. It held no seat in the Diet and was circumvened by the lordship of Broich.

The exact date of construction of its castle is unknown. Styrum was already prosperous in Frankish times before Charlemagne. In 1067 Styrum was given to the Abbacy of Kaiserswerth. After the murder of the Archbishop of Cologne, Engelbert of Berg, in 1225, the descendants of Frederick I of Isenberg gained ownership of Mülheim an der Ruhr and thereby of the castle as Lords of Styrum and took up residence. Here they founded the line of Counts of Limburg Styrum, a family that would later obtain important estates in Westphalia and the Lower Rhine. With the partition of the House of Limburg Styrum in 1644, Styrum passed to the line of Limburg-Styrum-Styrum.