Reginald I, Count of Burgundy

Reginald I, Count of Burgundy was the second Count of the Free County of Burgundy. Born in 986, he was the son of Otto-William, Count of Burgundy (the first Count) and Ermentrude de Roucy.

In 1016, Reginald married Alice of Normandy. He succeeded to the County on his father's death in 1026. Reginald was succeeded by his son, William I, on his death in 1057.

Reginald married Alice and had the following children:

• William I of Burgundy
• Gui de Brionne or Guy of Burgundy (c. 1025–1069), educated at the court of Normandy, who would lead a revolt for control of the Duchy of Normandy against his cousin William (William the Conqueror). He had to leave his county of Brionne and Vernon in Normandy, after being at the head of the coalition of the barons of Normandy, which was defeated at the battle of Val-ès-Dunes in 1047. Guy found refuge with his uncle Geoffrey II of Anjou. He later attempted to take over the county of Burgundy from his brother William.
• Hugh (c. 1037 – c. 1086), Viscount of Lons-le-Saunier, sire Montmorot, Navilly and Scey married to Aldeberge Scey. They had a son Montmorot Thibert, founder of the house Montmorot (or Montmoret).
• Falcon or Fouques of Burgundy (in fate unknown).
• Alberada of Buonalbergo was Robert Guiscard's first wife.