Name: Otto-William DE MÂCON
Title: Duke Count
Death: 21 SEP 1026
Name: Guglielmo di Ivrea Othon Guillaume
Title: man 1
Otto William (962 ? 21 September 1026, born as Guglielmo di Ivrea) was a son of Adalbert, King of Italy, and Gerberga of Mâcon.
His mother gave him what would be the Free County of Burgundy around Dôle in 982. Otto also inherited the duchy of Burgundy on the other side of the Saône in 1002 from his stepfather Otto Henry the Great. The duchy then corresponded to the diocese of Besançon in the Holy Roman Empire. He was also Count of Mâcon in France.
Burgundy was annexed to the crown of France by King Robert II in 1004. Determined to be sovereign ruler of his own lands, Otto revolted against the Emperor Henry II in 1016. This was after Rudolph III of Burgundy, the last king of that realm, had done homage to Henry at Strasbourg making him his guard and heir. On Otto's death, the Free County fell under the suzerainty of the German emperors.
 Marriage and issue
His first wife was Ermentrude, daughter of Count Renaud of Rheims.
They had two sons and three daughters:
* Guy had been associated as count of Mâcon from 995, he died young in 1006
* Matilda, married Landri of Nevers
* Geberga, married Guilhem II of Provence
* Renaud I, Count of Burgundy
* Agnes, married firstly William V of Aquitaine, secondly Geoffrey II of Anjou
Otto married the four-times widowed Adelaide of Anjou late in life and they had no known children.
See also: http://en.wikipedia.org/wiki/Dukes_of_Burgundy_family_tree
Father: Adalbert of IVREA b: ABT 932
Mother: Gerberga DE MÂCON
Ermentrude DE ROUCY
- Renaud I DE MÂCON b: 986
- Agnes DE BOURGOGNE