Saint Peter's Basilica.
He chose the name Leo at the time of his election as pope.
Leo I aka Saint Leo aka Leo the Great
Pope Leo X was responsible for the rebuilding of Saint Peter's Basilica in Rome.
Saint Leo the Great was declared a Doctor of the Church by Pope Benedict XIV in 1754.
Pope Leo became the Pope in 1513, his name also changed from Giovanni di Lorenzo de' Medici to Pope Leo.
If this is in reference to the 13 Leos, the first was Pope Leo I, the Great who ruled the Church from 440 to 461.
Leo's birth name is not known.
Please specify one of the 13 popes named Leo.
If you are referring to Pope Saint Leo I, he is a Doctor of the Church but not a patron saint.
The Eastern Orthodox Church.
There is no 'pope of Rome.' The popes are of the Universal Church. Pope Leo XIII was in office in 1892.
Which of the 13 popes named Leo are you referring to? Be specific.