Henry Windeck
Henry was born before 1243 in Windeck, Rheinland, Prussia.  He died before 1296 in Rheinland, Prussia.

 Agnes Marck
Agnes was born about 1245 in Windeck, Rheinland, Prussia.

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