3504. Guy de Dampierre Margrave of Namur. Born ca 1225/6. Guy died on 7 Mar 1305.
Guy, Margrave of Namur (1263-1305), and Count of Flanders (1278-1305). He was imprisoned at Compiegne.
ca 1246 Guy first married Matilda de Béthune, daughter of Robert VII de Béthune (ca 1200-12 Nov 1248) & Elizabeth de Morialmez. Born ca 1220. Matilda died on 8 Nov 1263.
Matilda, heiress of Béthune, Dendermonde, Richebourg, and Warneton.
In 1239 Jeanne first married Comte Hugues III de Rethel, son of Comte Hugues II de Rethel (-1227/8) & Dame de Beaufort Felicite de Broyes (bef 1181-ca 1244). Hugues III died 1242/3.