 He was named as the first auditor of the Grand Duke of Tuscany but declined instead accepting a position as advocate.In 1721, he earned the title "prelature Amadori" (defender of the causes of the poor) and thereafter was known as "Lanfredini-Amadori".In 1724, he delivered the oration for the funeral of Pope Innocent XIII; and in 1730, the oration De eligendo Pontifice for the election of the new Pontiff Clement XII.