[4] In November 1274, when he was Dean of the Cathedral of Paris,[5] he in turn gave all the property he inherited from Robert de Sorbon to the Congregatio pauperum Magistrorum Parisius studentium in Theologica Facultate.
[7] He was created cardinal-priest by Pope Martin IV (Simon de Brion) in the Consistory of 12 April 1281, and assigned the title of Santa Susanna.
[9] In September 1283 he was appointed by Pope Martin as a member of an examination committee concerning the election and credentials of the Abbot-elect of S. Pietro de Montecornaro.
[10] It was in 1283 as well, that John Peckham, Archbishop of Canterbury, in his campaign against pluralism in benefices in general, and those of Tedisius de Camilla in particular, attempted to engage the influence of Cardinal Geoffrey at the Papal Court on his behalf.
On 5 May 1284, he was one of the cardinals who subscribed to the Bull of Pope Martin IV, which granted the Kingdom of Aragon to Charles of Anjou, son of King Philip III of France.