Battle of Cassel

Battle of Cassel is in 1050-1099 Norman Invasion.

Anglo-Saxon Chronicle. 1070. Earl Baldwin (age 40) also died, and his son Arnulf (age 15) succeeded to the earldom. Earl William (age 50), in conjunction with the king of the Franks (age 17), was to be his guardian; but Earl Robert (age 37) came and slew his kinsman Arnulf (age 15) and the earl (age 50), put the king to flight, and slew many thousands of his men.

                    On 22 Feb 1071 Battle of Cassel was fought between uncle Robert "The Frisian" I Count Flanders (age 38) and nephew Arnulf III Count Flanders (age 16), supported by his mother Richilde Countess Flanders and Hainault and Philip "Amorous" I King France (age 18), over the succession of Flanders.                

                    Arnulf III Count Flanders (age 16) was killed. His brother Baldwin Flanders II Count Hainault (age 15) succeeded II Count Hainault. Robert "The Frisian" I Count Flanders (age 38) was appointed I Count Flanders.
                
                    William Fitzosbern 1st Earl Hereford (age 51) was killed. His son Roger de Breteuil Fitzosbern 2nd Earl Hereford succeeded 2nd Earl Hereford.
                
                    Eustace Flanders II Count Boulogne (age 56) and his son Eustace Flanders III Count Boulogne fought for Robert. During the battle Robert "The Frisian" I Count Flanders (age 38) and Richilde Countess Flanders and Hainault were captured, and subsequently exchanged for each other.