Otto IV Ravensberg
Otto IV was born about 1287 in Ravensberg, Westphalen, Prussia.  He died in Ravensberg, Westphalen, Prussia.

 Margaret Windeck
Margaret was born about 1289 in Windeck, Rheinland, Prussia.  She died after 1329.

 Margaretha Von Ravensberg
Margaretha was born about 1314 in Julich, Rheinland, Prussia.