He was born on 5 April 1859 in Milan, Italy, to Rinaldo Ferrini and Luigia Buccellati. He was baptized at the same baptismal font where the Frédéric Ozanam, also a native of Milan, had been baptized 46 years prior. After receiving his First Holy Communion at the age of twelve, he joined the Confraternity of the Blessed Sacrament. Rinaldo Ferrini, a professor of mathematics and science, taught his son at an early age. Contardo learned to speak several languages. His love for the Catholic faith caused friends to nickname him "Saint Aloysius". He entered the University of Pavia at age seventeen and, two years later, he was appointed Dean of Students. At age twenty-one he became a doctor of the law at the University. His doctoral thesis, which related Penal Law to Homericpoetry, was the basis of his being awarded a scholarship to the University of Berlin, where he specialized in Roman-Byzantine law, a field in which he became internationally recognized as an expert. During Ferrini's stay in Berlin, he wrote of his excitement at receiving the Sacrament of Penancefor the first time in a foreign land. The experience brought home to him, he wrote, the universality of the Roman Catholic Church. Upon his return to Italy, Ferrini was a lecturer in the universities at Messina, Modena, and Pavia. He received his first professorship at the young age of twenty-six. Contardo attempted to discern his vocation whether as a secular priest, a member of a religious order, or as a married person. Ultimately, he fulfilled his vocation as an unmarried layperson. He vowed himself to God, became a member of the Third Order of St. Francis in 1886, and was also a member of the Saint Vincent de Paul Society, to which he had been introduced by his father, a member of the Society. As a faculty member at University of Pavia, Ferrini was considered an expert in Roman Law. Over the course of his career he published books, articles and reviews. He taught for a time at the University of Paris. He later became a canon lawyer in addition to being a civil lawyer. An unconfirmed anecdote about Ferrini is that he was asked to attend a dinner party and, once there, found it tedious. His resort was to invite all the guests to join him in praying the rosary. In 1900 Ferrini developed a heart lesion. In autumn 1902, in order to rest, he went to his country home in the village of Suna, Novara,, on the shores of Lake Maggiore. While there, he became ill with typhus. He died at age forty-three on 17 October 1902. Residents of Suna immediately declared him a saint. His colleagues at the University of Pavia wrote letters in which he was described as a saint.
