| Robert I | |
| Succession: | Duke of Burgundy |
| Reign: | 1032–1076 |
| Predecessor: | Henry |
| Successor: | Hugh I |
| House: | House of Capet House of Burgundy (founder) |
| Father: | Robert II of France |
| Mother: | Constance of Arles |
| Spouse: | Helie of Semur Ermengarde of Anjou |
| Issue: | Henry of Burgundy Constance, Queen of León Hildegarde, Duchess of Aquitaine |
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| Issue-Pipe: | more... |
| Birth Date: | 1011 |
| Death Place: | Fleurey-sur-Ouche |
Robert I (1011 - 21 March 1076), known as Robert the Old and "French, Old (842-ca.1400);: Tête-Hardi|lit=the Headstrong", was Duke of Burgundy from 1032 to his death. Robert was the third 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."
His first son, Hugh, died in battle at a young age and his second son, Henry, also predeceased him. He was succeeded by Henry's eldest son, his grandson, Hugh I.
He married his first wife, Helie of Semur, about 1033, and repudiated her in 1048. Helie was the daughter of Dalmas I of Semur. Robert and Helie had five children:
From his second wife, Ermengarde, daughter of Fulk III of Anjou, he had one daughter: