Robert I, Duke of Burgundy
Robert I( 1011 – 21 March 1076), known as Robert the Old and, was Duke of Burgundy from 1032 to his death.
Robert was son of King Robert II of France and Constance of Arles.
His brother was Henry I of France.
Boson II of Arles
Boson II of Arles( 928 – 965/67) was Count of Avignon from 935 and Count of Arles from 949.
Around 953, Boso II married Constance of Provence, a daughter of the Bivinid Charles Constantine, Count of Vienne, from whom he got two sons: Redwood II( Roubaud), and William I( Guillaume the Liberator)(* c. 952; † 994), Count of Arles and Provence, and then Margrave of Provence.
His origin is controversial, even though his life is relatively well known.
Hedwig of France, Countess of Nevers
Hedwig( or Advisa) of France( c. 1003 – 1063) was a French princess, the daughter of Robert II of France and Constance of Arles.
She married Renauld I, Count of Nevers, on 25 January 1016, and they had the following children:
Hilary of Arles
Saint Hilary of Arles, also known by his Latin name Hilarius( c. 403-449), was a bishop of Arles in Southern France.
He is recognized as a saint by the Roman Catholic and Eastern Orthodox Churches, with his feast day celebrated on 5 May.
Auxanius
Auxanius was Bishop of Arles c. 543- c. 546.
He was succeeded by Bishop Aurelian of Arles.
Auxanius received two letters from Pope Vigilius.
He is otherwise unknown.
Theodred II (Bishop of Elmham)
Theodred II was a medieval Bishop of Elmham.
The date of Theodred's consecration unknown, but the date of his death was sometime between 995 and 997.
Robert II of France
Robert II (27 March 972 – 20 July 1031), called the Pious  or the Wise , was King of the Franks from 996 to 1031, the second from the House of Capet.
He was born in Orléans to Hugh Capet and Adelaide of Aquitaine.
Robert distinguished himself with an extraordinarily long reign for the time.
His 35-year-long reign was marked by his attempts to expand the royal domain by any means, especially by his long struggle to gain the Duchy of Burgundy.
His policies earned him many enemies, including three of his sons.
He was also known for his difficult marriages: he married three times, annulling two of these and attempting to annul the third, prevented only by the Pope's refusal to accept a third annulment.
Trophimus of Arles
According to Catholic lore, Saint Trophimus of Arles was the first bishop of Arles, in today's southern France.
Saturninus of Arles
Saturninus of Arles( bishop from 347- 361) was a French Arian bishop of Arles in the early 4th century who under Constantius II was Primate of Gaul.
He is known for his opposition to Saint Hilary of Poitiers, bishop of Poitiers, at the Church Council of Arles of 353.
Constance of Arles
Constance of Arles (c. 986 – 28 July 1032), also known as Constance of Provence, was queen of France as the third spouse of King Robert II of France.

Question: What is the date of death of Constance Of Arles's husband?
Answer: 20 July 1031