Cardinal Lamberto left Rome with a large sum of money and several documents. Fearing that their corruption will be exposed, Keinszig, Lucchesi, and Gilday plot to murder the Pope. Gilday poisons the pontiff's tea, killing him in his sleep. The character of Lamberto and the film's depiction of the events which led to his murder are based upon one of the conspiracy theories surrounding the sudden death of the real-life Pope John Paul I, Albino Luciani. Like the Lamberto character, Luciani was discovered dead in his bed in 1978, 33 days after his election to the papacy. Various theories, such as the
Pope the inability of the emperor to protect the papal estates against the Lombards, made Pope Stephen II turn from Emperor Constantine V. He appealed to the Franks to protect his lands. Pepin the Short subdued the Lombards and donated Italian land to the papacy. When Pope Leo III crowned Charlemagne (800) as Roman Emperor, he established the precedent that, in Western Europe, no man would be emperor without being crowned by a Pope. The low point of the papacy was 867–1049. This period includes the Saeculum obscurum, the Crescentii era, and the Tusculan Papacy. The papacy came under the control