Leo the Great died of natural causes. He was not a martyr.
Pope Leo VIII died on 965-03-01.
Pope Leo III died on 816-06-12.
Pope Leo III was born in 750.
Pope Stephen IV was chosen after the death of Pope Leo III.
Pope Saint Leo III died of natural causes on June 12, 816, but the place of his death is not recorded. However, it was probably in Rome.
Pope Stephen IV followed the reign of Leo III.
He was preceded by Pope Leo IV. Pope Nicholas I was the pope following Benedict III.
charlamagne/chareles the great
Leo's birth name is not known.
No, they are not the same person.
charlemagne
Pope Leo I died on 461-11-10.
Pope Leo V died in 903.