|Duke of Burgundy|
|Died||21 March 1076|
|Spouse||Helie of Semur|
Ermengarde of Anjou
|Henry of Burgundy |
Constance, Queen of León
Hildegarde, Duchess of Aquitaine
|House||House of Capet|
House of Burgundy (founder)
|Father||Robert II of France|
|Mother||Constance of Arles|
Robert I (1011 – 21 March 1076), known as Robert the Old and "Old French: Tête-Hardi, lit. 'the Headstrong'", was Duke of Burgundy from 1032 to his death. Robert was the son of King Robert II of France and Constance of Arles. His brother was Henry I of France.
In 1025, with the death of his eldest brother Hugh Magnus, he and Henry rebelled against their father and defeated him, forcing him back to Paris. In 1031, after the death of his father the king, Robert participated in a rebellion against his brother, in which he was supported by his mother, Constance of Arles. Peace was only achieved when Robert was given Burgundy (1032).
Throughout his reign, he was little more than a robber baron who had no control over his vassals, whose estates he often plundered, especially those of the Church. He seized the income of the diocese of Autun and the wine of the canons of Dijon. He burgled the abbey of St-Germain at Auxerre. In 1048, he repudiated his wife, Helie of Semur followed by the assassination of her brother Joceran and the murdering of her father, Lord Dalmace I of Semur, with his own hands. In that same year, the bishop of Langres, Harduoin, refused to dedicate the church of Sennecy so as not "to be exposed to the violence of the duke."
- Hugh (1034–1059), killed in battle
- Henry (1035–ca.1074). He died shortly before his father, thus making his son Robert's heir. His children included Hugh I, Duke of Burgundy (1057–1093), Odo I, Duke of Burgundy (1058–1103), and Henry, Count of Portugal (1066–1112), among others
- Robert (1040–1113), poisoned; married Violante, daughter of Roger I of Sicily
- Simon (1045–1087)
- Constance (1046–1093), married Alfonso VI of León and Castile
- Bouchard, Constance Brittain (1987). Sword, Miter, and Cloister: Nobility and the Church of Burgundy, 980-1198. Cornell University Press.
- Duby, Georges (1981). The Knight, the Lady and the Priest. University of Chicago Press.
- Hallam, Elizabeth (1980). Capetian France:987-1328. Longman Group Ltd.
- Gwatking, H. M., Whitney, J. P., et al. Cambridge Medieval History: Volume III—Germany and the Western Empire. Cambridge University Press: London, 1930.