Berengar II of Italy
Otto-William of Mâcon was born in 958 during the joint reign of his grandfather, King Berengar II of Italy, and his father, King Adalbert. His mother was Gerberga of Mâcon. His mother gave him what would later be the Free County of Burgundy around Dole in 982. Otto also inherited the duchy of Burgundy on the other side of the Saône in 1002 from his stepfather Odo Henry the Great. The duchy then corresponded to the diocese of Besançon in the Holy Roman Empire. By 990 Otto-William was the Count of Nevers. He was also Count of Mâcon in France.