Theodore Freylinghuysen Collier, 1911 Encyclopædia Britannica, Volume 14… (1911)
“ Innocent XIII. (Michele Angelo Conti) , pope from 1721 to 1724, was the son of the duke of Poli, and a member of a family that had produced several popes, among them Innocent III., was born in Rome on the 13th of May 1655, served as nuncio in Switzerland, and, for a much longer time, in Portugal, was made cardinal and bishop of Osimo and Viterbo by Clement XI., whom he succeeded on the 8th of May 1721. One of his first acts was to invest the emperor Charles VI. with Naples (1722) ; but against the imperial investiture of Don Carlos with Parma and Piacenza he protested, albeit in vain. ”
