Pope Leo XII, born on August 22, 1760, in Italy, died on February 10, 1829. He was the 253rd Pope of the Roman Catholic Church, serving from 1823 to 1829. He was born in Rimini, Italy, originally named Zigmond Mayr, and was a German-born Italian Pope. 【Biography】Pope Leo XII, during his papacy, was committed to restoring the influence of the Catholic Church and promoting a series of religious reforms. He opposed Napoleon's rule and supported the Vienna Congress in 1815, aimed at restoring the old order in Europe. He also issued the encyclical 'Quo Gravissimum', emphasizing the importance of Catholic faith and moral teachings. 【Impact and Evaluation】Pope Leo XII was a controversial figure, his policies causing widespread debate in Europe at the time. He was considered conservative but also promoted some significant reforms. His papacy, although short, had a profound impact on the history of the Catholic Church.