Robert played an important role in the succession to the throne of his brother-in-law Philip VI of France and was his trusted advisor for some time.

In 1331, Robert was found guilty of forging the will of his late father, using thirty-four perjured depositions and a fake document created by Jeanne de Divion, who was subsequently burned at the stake.

[7] Robert failed to respond to a fourth summons to appear before the king and was sentenced in absentia to exile and estate confiscation on 8 April 1332.

While in England, Robert became a member of Edward's royal council and provided the king with extensive information about the French court.

Robert followed Edward on his campaigns in the early part of the war, including commanding the Anglo-Flemish army at the Battle of Saint-Omer in 1340.

[11] They had: Robert III of Artois is a major character in Les Rois maudits (The Accursed Kings), a series of French historical novels by Maurice Druon in which many of these events are retold.