Question: Who is Joan Iii, Countess Of Burgundy's father-in-law?

Knowledge 1: Joan III, Countess of Burgundy
Joan III of Burgundy (1/2 May 1308 – 10/15 August 1347), also known as Joan of France was a reigning Countess of Burgundy and Artois in 1330–1349, She was also Duchess of Burgundy by marriage to Odo IV, Duke of Burgundy.She was the eldest daughter of King Philip V of France and Countess Joan II of Burgundy. [SEP] Knowledge 2: Odo IV, Duke of Burgundy
Odo IV or Eudes IV (1295 – 3 April 1349) was Duke of Burgundy from 1315 until his death and Count of Burgundy and Artois between 1330 and 1347.He was the second son of Duke Robert II and Agnes of France.
Knowledge 1: Joan III, Countess of Burgundy
Joan III of Burgundy (1/2 May 1308 – 10/15 August 1347), also known as Joan of France was a reigning Countess of Burgundy and Artois in 1330–1349, She was also Duchess of Burgundy by marriage to Odo IV, Duke of Burgundy.She was the eldest daughter of King Philip V of France and Countess Joan II of Burgundy. [SEP] Knowledge 2: Philip I, Count of Auvergne
Philip of Burgundy (November 10, 1323 – August 10, 1346) was Count of Auvergne and Boulogne (as Philip I) in right of his wife and was the only son and heir of Odo IV, Duke of Burgundy, and of Joan III, Countess of Burgundy.His mother was the daughter of King Philip V of France and of Joan II, Countess of Burgundy.He married Joan I, Countess of Auvergne and Boulogne, in c. 1338.In 1340, he fought with his father who defended the city of Saint-Omer against the assaults of Robert III of Artois.In 1346, he participated in the siege of Aiguillon, led by John, Duke of Normandy (the future John II of France).It was during this siege that he died, after falling from his horse.His widow Joan remarried in 1349, her second husband being King John II of France.Since Philip had no other sons from his marriage to Joan, the future of the House of Burgundy was then placed in the hands of his young son Philip (1346–61), who died childless.After the death of the younger Philip, the dukedom of Burgundy became a part of the French crown, and was granted by John II of France to his youngest son (and the previous Duke’s stepbrother), Philip the Bold.His daughter, Joan (134411 September 1360), was betrothed to Amadeus VI, Count of Savoy from 1347 to 1355, and was raised at his court.When she was released from the engagement at age 10, she entered a convent at Poissy, where she remained for her final years.
Knowledge 1: Odo IV, Duke of Burgundy
Odo IV or Eudes IV (1295 – 3 April 1349) was Duke of Burgundy from 1315 until his death and Count of Burgundy and Artois between 1330 and 1347.He was the second son of Duke Robert II and Agnes of France. [SEP] Knowledge 2: Philip I, Count of Auvergne
Philip of Burgundy (November 10, 1323 – August 10, 1346) was Count of Auvergne and Boulogne (as Philip I) in right of his wife and was the only son and heir of Odo IV, Duke of Burgundy, and of Joan III, Countess of Burgundy.His mother was the daughter of King Philip V of France and of Joan II, Countess of Burgundy.He married Joan I, Countess of Auvergne and Boulogne, in c. 1338.In 1340, he fought with his father who defended the city of Saint-Omer against the assaults of Robert III of Artois.In 1346, he participated in the siege of Aiguillon, led by John, Duke of Normandy (the future John II of France).It was during this siege that he died, after falling from his horse.His widow Joan remarried in 1349, her second husband being King John II of France.Since Philip had no other sons from his marriage to Joan, the future of the House of Burgundy was then placed in the hands of his young son Philip (1346–61), who died childless.After the death of the younger Philip, the dukedom of Burgundy became a part of the French crown, and was granted by John II of France to his youngest son (and the previous Duke’s stepbrother), Philip the Bold.His daughter, Joan (134411 September 1360), was betrothed to Amadeus VI, Count of Savoy from 1347 to 1355, and was raised at his court.When she was released from the engagement at age 10, she entered a convent at Poissy, where she remained for her final years.

Answer: Robert II