Giovanni Battista Mazzucconi

In March 1852, Father Mazzucconi embarked from London with his companions from the institute. After an arduous three-month journey, they arrived in Sydney, Australia, in July 1852. They spent two months there studying local languages and customs under the guidance of a Marist guide before setting sail for Melanesia. Arriving in October 1852, the missionaries split into two groups to establish stations on Woodlark Island (Muyua) and Rook Island (Umboi). Father Mazzucconi was assigned to Rook Island. Living conditions there were extremely harsh: stifling tropical climate, malaria epidemics, total isolation, and the distrust of the local populations, who practiced infanticide and attributed illnesses to the missionaries. Despite these trials, the young priest strove to integrate, convinced that silent presence and language learning were the first steps of evangelization. However, weakened by violent bouts of malaria, he was forced to return to Sydney in January 1855 to seek treatment. During his convalescence, he dedicated himself to the Italian immigrants in the city. Meanwhile, the situation on the islands of Woodlark and Rook became untenable for his confreres who had remained there. Threatened with death and exhausted, they decided to abandon the mission and return to Sydney. Unaware of this departure, Father Mazzucconi, barely recovered, embarked on August 18, 1855, aboard the schooner Gazelle to rejoin his mission post.

On September 7, 1855, the Gazelle ran aground on a coral reef in Guasopa Bay, near Woodlark Island. A group of natives approached the ship in boats, feigning peaceful intentions. One of the local chiefs boarded and, under the pretext of greeting Father Mazzucconi, struck him a fatal blow to the head with an axe. The young missionary died instantly at the age of 29. The entire crew and passengers of the ship were massacred, and the boat was looted and then destroyed. News of this massacre did not reach Sydney until eight months later. The death of Father Mazzucconi was immediately perceived as a martyrdom in odium fidei (in hatred of the faith), as he was killed because of his identity as a priest and his work of evangelization. The cause for beatification was opened in Milan on April 10, 1959, with the informative process, and was then officially introduced in Rome on October 28, 1975.

On February 19, 1984, Pope John Paul II solemnly proclaimed Giovanni Battista Mazzucconi blessed in St. Peter's Basilica in Rome, at the same time as the martyrs of Angers. The Sovereign Pontiff hailed him as the first martyr of the PIME and a model of apostolic courage for the universal Church. His liturgical memorial is set for September 7, the day of his birth into Heaven. In the Archdiocese of Milan, according to the Ambrosian rite, he is celebrated on September 10.

The spirituality of Blessed Giovanni Battista Mazzucconi rests on a total abandonment to Providence and a joyful acceptance of suffering for Christ. Before his final journey, he wrote: "Beato sarà il giorno in cui mi sarà chiesto di soffrire per il Vangelo. Ma ancora più beato sarà il giorno in cui sarò degno di dare la mia vita per esso." (Blessed will be the day when I am asked to suffer for the Gospel. But even more blessed will be the day when I am worthy to give my life for it.) He also had a very modern vision of mission, prioritizing listening and inculturation before any dogmatic proclamation: "La missione significa stare vicino alla gente e imparare la loro lingua. Poi, quando Dio lo vorrà, parleremo loro di Lui." (Mission means being close to the people and learning their language. Then, when God wills it, we will speak to them of Him.) Although his mission in Oceania seemed to be an immediate failure, his sacrifice fertilized the land of Papua New Guinea, where he is today venerated as one of the founding fathers of the local Church. The PIME house in Rancio di Lecco, which today hosts elderly missionaries, bears his name in homage to his spiritual legacy.