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Pope Leo XIV canonizes Carlo Acutis as first millennial saint

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Pope Leo XIV celebrates the canonization Mass of Carlo Acutis and Pier Giorgio Frassati in St. Peter's Square at the Vatican Sunday, Sept. 7, 2025.

Pope Leo XIV declared a 15-year-old computer whizz the Catholic Church’s first millennial saint yesterday, giving the next generation of Catholics a relatable role model who used technology to spread the faith and earn the nickname "God’s influencer."

Leo canonized Carlo Acutis, who died in 2006, during an open-air Mass in St Peter’s Square before an estimated 80,000 people, many of them millennials and couples with young children. During the first saint-making Mass of his pontificate, Leo also canonized another popular Italian figure who died young, Pier Giorgio Frassati.

Leo said both men created "masterpieces" out of their lives by dedicating them to God.

"The greatest risk in life is to waste it outside of God’s plan," Leo said in his homily. The new saints "are an invitation to all of us, especially young people, not to squander our lives, but to direct them upwards and make them masterpieces."

An ordinary life that became extraordinary

Acutis was born on May 3, 1991, in London to a wealthy, but not particularly observant Catholic family. His Italian parents, Antonia Salzano and Andrea Acutis, had moved to London from Italy in 1988 when his father was appointed corporate finance executive at Lazard Brothers & C. Ltd.

The family moved back to Milan soon after young Carlo was born. According to Salzano, Carlo had a normal, happy childhood, albeit one that increasingly showed his religious fervour, thanks particularly to the influence of his Polish Catholic nanny.

“He had an ordinary life, like all of us. But an ordinary life that became extraordinary,” Salzano says.

Bishops in St Peter's Square during an open-air jubiliar audiencewith Carlo Acutis' portrait is hanging at top right.

A ‘Little Buddha’ who insists on daily prayer

Acutis was an obedient child who insisted on going to Mass daily as a youngster. His mother called him “Little Buddha” because of his calm, joyful demeanour.

He insisted on receiving First Communion, one of the main sacraments of the Catholic Church, at the young age of seven. He would pray before and after Mass before the Eucharist, a practice known as Eucharistic adoration.

A computer whizz who spread the faith

While he enjoyed regular pastimes for his age — hiking, video games, soccer and joking around with friends – Acutis also taught catechism in a local parish and did outreach to the homeless.

His father has said Carlo was particularly interested in computer science and devoured college-level books on programming even as a youngster. One of his main tech legacies is a computer website documenting more than 100 so-called Eucharistic miracles recognised by the church, a project he completed at a time when such sites were the domain of professionals.

A flu that becomes leukaemia

In October 2006, at age 15, Acutis fell ill with what his parents thought at first was just a case of the flu. He was hospitalised and quickly diagnosed with acute and aggressive leukaemia. Within days, he was dead.

His funeral was held in Milan, but he was eventually entombed in Assisi, where the family vacationed. The hilltop town was already a major pilgrimage destination because of its ties to St Francis of Assisi. Acutis' presence has drawn millions.

His glass-fronted tomb reinforces to viewers the ordinariness of Acutis' life: He's wearing jeans, Nike sneakers and a sweatshirt.

Pope Leo XIV waves to faithful holding a picture of Blessed Carlo Acutis.

A fast-track to sainthood

Up until the pontificate of St John Paul II, sainthood candidates regularly had to wait decades if not centuries to be canonised, well after a “cult of sanctity” had grown around them. This groundswell of devotion from ordinary faithful signalled to the church that there was popular conviction of someone’s holiness, which would then trigger an official church investigation into the person’s life, the first step in the sainthood process.

In the case of Acutis, the dynamic seemed somewhat reversed: The church investigation into Acutis’ virtues began in Milan in 2013, at the request of some family, friends and priests, just after the mandatory five-year waiting period after someone's death had expired.

It then seemed as if the process itself created the “cult of sanctity” around Acutis, almost as if the campaign to make him a saint went viral on social media, reinforcing his popularity. There is no doubt that the church saw in Acutis a relatable role model for young people in the digital age.

Acutis was named “venerable” in 2018. He was then declared “blessed” in 2020 after the Vatican’s saint-making office declared that a child in Brazil who recovered from a pancreatic deformation was “scientifically inexplicable” and a miracle attributed to Acutis' intercession.

Last year, the church paved his way to sainthood by declaring a second miracle — the complete healing of a Costa Rican student in Italy from major head trauma in a bicycle accident after her mother prayed at Acutis’ tomb.

Another Italian who died young also canonised

Acutis is being canonised along with another popular Italian who died young, Pier Giorgio Frassati.

Frassati, who lived from 1901-1925, was born into a prominent Turin family — his father founded the La Stampa newspaper. But he was devoted to serving the poor and carrying out acts of charity while spreading his faith to his friends. An ardent anti-Fascist, Frassati died at the age of 24 of polio.

Frassati has a special connection to Leo. After the first World War, he joined the Italian People’s Party, a Catholic-inspired political party that promoted the church’s social teachings based on the principles of Pope Leo XIII’s most famous encyclical, Rerum Novarum. The text addressed workers’ rights and capitalism at the dawn of the industrial revolution.

Leo, the former Robert Prevost, has pointed to his namesake and the encyclical as an inspiration driving his own pontificate, pointing to the parallels of the concerns about fundamental rights in the age of artificial intelligence and the technological revolution.

Frassati was beatified in 1990 by St. John Paul II.

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