No, Pope Leo XII has not been canonized.
Pope Leo XII was born on August 22, 1760.
Pope Leo XII died on February 10, 1829 at the age of 68.
Pope Leo XII died on February 10, 1829 at the age of 68.
Pope Leo VIII (963-64) followed Pope John XII.
Pope Leo XII was born on August 22, 1760 and died on February 10, 1829. Pope Leo XII would have been 68 years old at the time of death or 254 years old today.
There was a Pope Leo XIII but he has not been canonized as a saint.
Pope Saint Leo the Great is not a patron saint.
If you are referring to Pope Saint Leo I, he is a Doctor of the Church but not a patron saint.
Leo XII reigned from 1823-to 1829
Saint Leo the Great was declared a Doctor of the Church by Pope Benedict XIV in 1754.
Pope St. Leo I, the Great, is a Doctor of the Church but not considered a patron saint.
The feast day of Pope Saint Leo the Great is on November 10.