The Oath of Leo III was created in 1517.
A:Pope St. Leo III (795-816) was a generally cautious man. For example, he forbade the addition of the filioque clause ('and the son') to the Nicene Creed, yet allowed its continued use.During his reign as pope, Leo III was accused of adultery, perjury and other crimes. Charlemagne seems to have believed the accusations, but Leo cleared himself by an oath of purgation.
Pope Leo III was born in 750.
Leo III the Isaurian was born in 685.
Pope Stephen IV followed the reign of Leo III.
Leo III the Isaurian died on 741-06-18.
Pope Leo III died on 816-06-12.
The Oath was created in 1973.
Pope Stephen IV was chosen after the death of Pope Leo III.
charlamagne/chareles the great
The Oath of Pierre was created in 1913.
Eternal Oath was created in 1991.
Ceremonial Oath was created in 1989.