He participated in the battle inside of the walls of Courtrai on the 11th of July 1302.

[1] According to Étienne Baluze, Robert fleed the battle together with other nobles,[1] but other chroniclers disagree.

[2] In 1314, his father designated his wife, Beatrice of Montgascon, as his only heir.

[2] So Robert succeeded his father as count of Auvergne and Boulogne.

[6] They had only one son: After Blanche's death in 1304, Robert married Marie of Dampierre, daughter of William I of Termonde and Alice of Clermont-Nestle.