Count Engelbert of the Mark I
Engelbert was born in 1218 in Sittard, Limburg, Netherlands.¹   He died at the age of 59 on November 16th, 1277.¹ 

 Kunigunde von Bliescastel
Kunigunde was born in 1220 in Bliescastel, Pfalz, Bavaria.¹   Kunigunde is no longer alive.

 Countess Sofie of the Mark
Sofie was born in 1245 in Koln, Rheinland, Prussia.² 

 Count Eberhard of the Mark I
Eberhard was born in 1249 in Koln, Rheinland, Prussia.³   He died at the age of 59 on July 4th, 1308.³ 

 Countess Agnes of the Mark
Agnes was born in 1265 in Windeck, Rheinland, Prussia.²