sentences:  William appears in the documents of his father from 992, and succeeded the elder William on the latter's retirement to a monastery just before his death in 994, but as a minor he fell under the control of his paternal uncle, Rotbold I, who would intervene with William and his mother, Adelaide, until his death in 1008.William did not succeed to the margravial title, which went to Rotbold.By 1013, he had married Gerberga, daughter of Otto-William, Count of Burgundy and Ermentrude, Countess of Mâcon and Besançon.