There have been some very bad, evil and vile popes who led rather profligate lives. However, despite how bad they were, not one of them committed heresy.
There have been 13 popes named Leo. Please specify one of them.
the corpse of Pope Formosus was tried by Pope Stephen VI in the 9th century.
Example of heresy in a sentence: Dan Brown's anti-christian doctrine in The Da'Vinci Code was denounced as a heresy by the pope. Witches were burned by officials of the church for their alleged heresy.
Any thing that was against God, the church, the Pope or a king.
I'd imagine because of his Heresy he was excommunicated.
if he was a baptized member of the church and he rejected an article of faith, then yes. if he rejected any article of faith without being a baptized member of the church then he is free of heresy.
Martin Luther was not arrested, although a warrant was issued due to heresy against the Pope.
Martin Luther was no pope, history tells us that he was a professed friar of the Augustinian Order, and that he had been ordained to the priesthood, before he left his Order, broke all his vows, and was excommunicated for heresy.
As far as I know, the Pope is considered human, even by Catholics, so even the Pope can make mistakes. Catholics believe the pope is a liable to make mistakes as any other. Where this idea that the pope can never do wrong stems out of a misunderstanding regarding papal infallibility. Papal infallibility is so specific and rare an occasion that most popes never invoke it during their reign. A pope is guaranteed by God never to make a mistake when invoking his office ex cathedra (from the seat of Peter) to definitively teach to the universal Church some doctrine pertaining to Faith and Morals. The last such invocation was made by Pius XII, decades ago. The pope is also not able to fall into formal heresy - he may through ignorance, misunderstanding or poor execution say or do things that appear heretical or are "material heresy" but he is protected from personally espousing these things, to believe them, which would be "formal heresy". A typical example of this is the Sede Vacantist movement, some strains of which point to John XXIII as both a material and formal heretic and thus breaking the papal line. The pope's leniency and fostering of modernist and Protestant ideals was material heresy, however, whether it was formal is not determined since the pope never declared his personal belief in them.
In 1456, 25 years after her death, Joan of Arc was acquitted for heresy charges and declared a martyr by Pope Callixtus the III. She was burned at the stake at 19 years old and is now considered a French heroine and Catholic Saint.
Those who confessed to heresy during the Middle Ages were often punished by the church or civil authorities. Penalties could include imprisonment, fines, loss of property, exile, or even execution, depending on the severity of the offense and the laws of the time.
Jan hus (john Huss) changed the church by asking questions about the pope in the bible. Hus began to ask questions such as "Why is there pope if it is not mentioned in the bible". For Jan Hus's heresy (ongoing questions) he was burnt at a steak.