Therefore , he resigned the appointment , becoming instead his uncle 's papal treasurer , protonotary and Cardinal Priest of the Basilica of San Clemente .
In Siena , the political leaders objected to a bishop who was not only 24 , but also a foreigner .
He resigned the appointment , becoming instead his uncle 's papal treasurer , protonotary and Cardinal Priest of the Basilica of San Clemente .
In Siena , the political leaders objected to a bishop who was not only 24 , but also a foreigner .