Gerbod the Fleming, Earl of Chester and hereditary advocate of the Abbey of Saint Bertin at Saint-Omer, Flanders, had obtained permission of William the Conqueror to return to Flanders, ostensibly to tend to his affairs there. See: C.P. Lewis, 'The Formation of the Honor of Chester, 1066-1100,' The Earldom of Chester and its Charters; A Tribute to Geoffrey Barraclough, Ed. A.T. Thacker, Journal of the Chester Archaeological Society, Chester, Vol. 71, 1991, p.39. doi:10.5284/1070311 He was at the Battle of Cassel in early 1071 and according to Gilbert of Mons killed Arnulf III in battle. After realizing he had killed the rightful count of Flanders who was also the Conqueror's nephew, he fled to Rome to seek forgiveness for the sin of killing his liege lord. The Pope, Gregory VII, sent him to Hugh, Abbot of Cluny, who permitted him to become a monk at Cluny. See: Karl Hanquet (ed.), La Chronique de Saint-Hubert dite Cantatorium (Hayez, Imprimeur de L'Academie, Bruxelles, 1906), pp. 66-67; Gilbert of Mons, Chronicle of Hainaut, Translated by Laura Napran (Boydell Press, Woodbridge, 2005), pp. 6-7.
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Gerbod the Fleming, Earl of Chester and hereditary advocate of the Abbey of Saint Bertin at Saint-Omer, Flanders, had obtained permission of William the Conqueror to return to Flanders, ostensibly to tend to his affairs there. See: C.P. Lewis, 'The Formation of the Honor of Chester, 1066-1100,' The Earldom of Chester and its Charters; A Tribute to Geoffrey Barraclough, Ed. A.T. Thacker, Journal of the Chester Archaeological Society, Chester, Vol. 71, 1991, p.39. doi:10.5284/1070311 He was at the Battle of Cassel in early 1071 and according to Gilbert of Mons killed Arnulf III in battle. After realizing he had killed the rightful count of Flanders who was also the Conqueror's nephew, he fled to Rome to seek forgiveness for the sin of killing his liege lord. The Pope, Gregory VII, sent him to Hugh, Abbot of Cluny, who permitted him to become a monk at Cluny. See: Karl Hanquet (ed.), La Chronique de Saint-Hubert dite Cantatorium (Hayez, Imprimeur de L'Academie, Bruxelles, 1906), pp. 66-67; Gilbert of Mons, Chronicle of Hainaut, Translated by Laura Napran (Boydell Press, Woodbridge, 2005), pp. 6-7.
