Isabelle of Luxembourg
Princess
Isabelle of Luxembourg was a countess consort of Flanders and a marquise consort of Namur by marriage to Guy of Dampierre. Wikipedia
Born: 1247
Died: 1298 (age 51 years)
Parents: Henry V, Count of Luxembourg and Margaret of Bar
Grandchildren: Robert de Fiennes, Jeanne de Fiennes, Blanche of Namur, and more
Spouse: Guy, Count of Flanders (m. 1265)