Engelbert III of the Mark

Engelbert III of the Mark (1333–1391), eldest son of Adolf II and Margaret of Cleves, succeeded as Count of the Mark in 1347. When his brother Adolf inherited Cleves in 1368, Engelbert received its lands east of the Rhine.

He allied with Cologne against the Count of Arnsberg, then fought Cologne again in 1376–1377 after Arnsberg was sold to the archbishopric. He married twice but left no son, and after dying of plague at Wetter in December 1391 was succeeded by Adolf.