distinguished himself in his ecclesial studies and later received his ordination to the priesthood on 3 April 1892 from the Archbishop of Lucca Nicola Ghilardi, before being appointed as the pastor for Compignano di Massarosa; he was first assigned to teach French to seminarians but this task was made brief so that he could begin pastoral work. He carried out his duties there as a pastor until he attended a conference in whichGiovanni Battista Scalabrini (the Bishop of Piacenza) spoke about Italian emigrants who were moving abroad. He decided from that point that he would collaborate with Scalabrini and the two set to work on how best to guide and support Italian emigrants. He often accompanied immigrants to the port in Genova to see them off, but decided that it was not enough to help them. Marchetti decided to focus on Brazil while Scalabrini – despite his own pastoral obligations in Piacenza – would focus on the United States. He undertook his first trip to Brazil from the Genova port on 15 October 1894, that lasted until December, and would later make a second trip in 1895 (serving as a chaplain on both trips) that confirmed to him the need to move to Brazil to better respond to his mission. That second trip saw a mother die aboard the ship "Julius Caesar" leaving her months-old daughter and husband. This episode proved to Marchetti the need to expand his care for both emigrants and children. It was after he arrived at São Paulo that he oversaw the establishment of an orphanage for the protection of abandoned children in 1895. Marchetti also invited his sister Assunta in 1895 to help him in his mission in Brazil and he would also go on to co-found alongside her the Scalabrinian Sisters. His sister would arrive in Brazil alongside their mother and two others, though their mother returned to their homeland in 1897. He later made his religious profession on 25 October 1895 in Piacenza into the hands of Scalabrini in the presence of his sister. Marchetti died on 14 December 1896 in São Paulo after having contracted typhoid fever as he tended to an ill woman on her deathbed, whose confession he went to go and hear. His remains are buried in São Paulo. Beatification process The centennial commemorating his death prompted the Scalabrinian Superior General Father Luigi Favero and the Scalabrinian Sisters Superior