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 Leo I Peter's Basilica, but in the 12th century, the Gallican Rite feast of 11 April was admitted to the General Roman Calendar, which maintained that date until 1969. Some traditionalist Catholics continue to observe pre-1970 versions of that calendar. The Eastern Catholic Churches as well as the Eastern Orthodox Church celebrate Saint Leo on 18 February. Troparion (Tone 3) Troparion (Tone 8) Kontakion (Tone 3) Pope Leo I Pope Leo I ( 400 – 10 November 461), also known as Saint Leo the Great, was Pope from 29 September 440 and died in 461. Pope Benedict XVI said that Leo's papacy