Death Location Normandie, France OR Kassel, Germany
Are you sure it is not Kassel, Flanders? (Cassel, Nord-Pas de Calais, France) https://fr.wikipedia.org/wiki/Cassel_(Nord)
The decisive battle there was in 1071.
I'm new to Curating this profile - so I'm looking for research input. That does look very possible.
Death Location Normandie, France OR Kassel, Kassel, Hesse, Germany again
Death Location Normandie, France Kassel, Hessen, Germany