William I, called the Liberator, was Count of Provence from 968 to his abdication. In 975 or 979, he took the title of marchio or margrave. He is often considered the founder of the county of Provence. Wikipedia
Born: 950 AD
Died: August 29, 993 AD (age 43 years), Avignon, France
Grandchildren: Fulk Bertrand of Provence, Henry I of France, Geoffrey I of Provence, and more
Parents: Boso II of Arles and Constance of Viennois
Children: William II of Provence, Constance of Arles, and Ermengarde, Countess of Auvergne
Spouse: Adelaide-Blanche of Anjou (m. 984 AD) and Arsenda, daughter of Arnold of Comminges
Siblings: Rotbold I, Count of Provence