 He took solemn possession in person on 19 May.On 21 March 1528 he presided over a council in Bourges, at which the new heresies of Martin Luther were denounced and anathematized.In 1529, Archbishop de Tournon was sent as Ambassador Extraordinary to the Court of Madrid to obtain the release of the two eldest sons of King Francis, who were hostages of their father's good behavior.