Who is Pope Leo XIV?

A Chicago childhood and an early vocation

Robert Francis Prevost was born on September 14, 1955, in Chicago, Illinois. His father, Louis Marius Prevost, was a World War II veteran who became an educator. His mother, Mildred Martínez, was a teacher and librarian. The family was of mixed heritage: his father's family had French and Italian roots; his mother's was of Spanish descent with Louisiana Creole ancestry. He has two brothers, Louis Martín and John Joseph. The family was devoutly Catholic and the parents were active in their parish, St. Mary of the Assumption in Riverdale, a southern suburb of Chicago.

The future Pope Leo XIV was raised in Dolton, a working-class Chicago suburb bordering the city's far South Side. To his family he was known as Rob; later, to friends in religious life, as Bob. By every account he was reserved, studious, and serious about his faith from an early age. He attended his parish school and then entered the Minor Seminary of the Augustinian Fathers, which is a high-school-level program for boys discerning a vocation to religious life.

He moved on to Villanova University in suburban Philadelphia, an Augustinian-run institution, where he earned a bachelor's degree in mathematics in 1977. He also studied philosophy. The mathematical training is worth noting because it is unusual in a future pope; most are trained primarily in theology and philosophy. The mathematical background shows up later in the discipline and precision of his magisterial writing.

The Augustinian formation

On September 1, 1977, the same year he graduated from Villanova, Prevost entered the novitiate of the Order of Saint Augustine in Saint Louis. He made his first profession of vows on September 2, 1978.

The choice of the Augustinians was deliberate and shapes much of what comes after. The Order of Saint Augustine, founded in 1244, draws its spirituality from the writings of Saint Augustine of Hippo, the 4th and 5th-century theologian who is one of the most influential figures in the history of Christianity. Augustinian spirituality is characterized by a particular kind of inward reflection, an emphasis on community life, and a strong tradition of scholarship and teaching. The Augustinians are not a contemplative order; they are an active order with missions across the world. But the inward quality of Augustine's own writing, particularly the Confessions, gives the order a contemplative texture that other active orders do not always share.

Prevost was sent to Rome to study. He pursued canon law at the Pontifical University of Saint Thomas Aquinas, known as the Angelicum. He was ordained a priest on June 19, 1982, at the Augustinian College of Saint Monica in Rome. He obtained his licentiate in canon law in 1984 and his doctorate in 1987, with a thesis on the role of the local prior in the Order of Saint Augustine. The thesis topic is itself revealing: an interest in how religious authority operates at the community level, in the relationship between the formal structures of a religious order and the daily life of its members.

The Peru years

In 1985, while still finishing his doctoral thesis, Prevost was sent to Peru for the first time. He served as chancellor of the Territorial Prelature of Chulucanas, in the Piura region of northern Peru, from 1985 to 1986. This was his first immersion in Latin American pastoral work.

He returned to the United States briefly in 1987 and 1988 to direct vocations and missions for the Augustinian Province of Chicago. Then he went back to Peru and stayed for the next ten years.

From 1988 to 1998 he was based in Trujillo, on the northern Peruvian coast. He directed the joint formation project for Augustinian candidates from the vicariates of Chulucanas, Iquitos, and Apurímac, which meant running the seminary that trained the next generation of Peruvian Augustinian priests. He taught canon law in the diocesan seminary. He served as judicial vicar of the Archdiocese of Trujillo. He held local Augustinian leadership positions and was an active pastor in poor and rural communities.

The decade in Peru is the formative period of his pastoral identity. Northern Peru in the late 1980s and 1990s was a region of significant poverty, periodic natural disasters, internal migration, and the long shadow of the Shining Path insurgency, which had peaked in the 1980s but continued to shape Peruvian life into the 1990s. Local accounts from his time there describe a priest who waded through floodwaters to reach communities cut off by storms, who personally drove a pickup truck to deliver supplies to mountain villages, and who was fluent and at home in Spanish in a way that made him popular among the people he served.

It was during the Peruvian decade that the future pope's environmental sensitivity developed, formed by witnessing water scarcity, soil erosion, and the disproportionate harm done by climate-driven natural disasters to poor communities. The same period grounded what would become his pastoral feel for the preferential option for the poor, not as an academic principle but as a daily reality of ministry.

In 1999, Prevost returned to Chicago. He was elected Provincial Prior of the Augustinian Province of "Mother of Good Counsel" in the archdiocese, the senior leadership position for Augustinians in the central United States. Two and a half years later, in 2001, the General Chapter of the worldwide Order of Saint Augustine elected him Prior General, the head of the worldwide Augustinian Order. He was confirmed for a second term in 2007 and served until 2013, twelve years total in the top leadership of an international religious order with houses on every inhabited continent.

Bishop, cardinal, and prefect under Pope Francis

In October 2013, with his term as Prior General concluded, Prevost returned to Chicago and resumed local Augustinian work as director of formation, first councilor, and provincial vicar of the Chicago province.

The rapid elevation began the next year. In November 2014, Pope Francis appointed Prevost as Apostolic Administrator of the Diocese of Chiclayo in northern Peru. In 2015 he was ordained a bishop and formally installed as Bishop of Chiclayo. He returned to the country where he had spent so much of his adult life, now as its bishop.

His seven years as Bishop of Chiclayo coincided with significant challenges in Peru, including major flooding from El Niño events, the COVID-19 pandemic, and ongoing political instability. By all accounts he led the diocese with the same hands-on pastoral style he had shown as a young missionary. He acquired Peruvian citizenship during this period, becoming a naturalized citizen of the country he had served for so long.

In January 2023, Pope Francis called him back to Rome to serve as Prefect of the Dicastery for Bishops, one of the most powerful positions in the Roman Curia. The Prefect of Bishops is responsible for advising the pope on the appointment of new bishops around the world, which means shaping the episcopal leadership of the Catholic Church at the most senior administrative level. Francis also made him president of the Pontifical Commission for Latin America. In September 2023, Francis created him a cardinal.

The rapid rise, from local provincial in 2013 to cardinal-prefect in 2023, was striking but not unique. Pope Francis was known to identify and promote figures whose pastoral style aligned with his own pastoral vision, and Prevost's combination of missionary experience, administrative competence, and personal reserve fit the profile.

The conclave and the election

Pope Francis died on April 21, 2025, after twelve years on the papal throne. The conclave to elect his successor convened in early May. Cardinal Prevost was one of more than 130 cardinal electors and entered the conclave with some name recognition among the Vatican-watchers but was not among the small group of cardinals widely predicted by the media as the most likely successor.

The conclave was relatively short. On May 8, 2025, the second day of voting, Prevost was elected on what is reported to have been the fourth ballot. He accepted the election, chose the name Leo XIV, and emerged onto the central balcony of Saint Peter's Basilica to greet the crowd as the new pope.

His first words as pope, given from that balcony, were a greeting in Italian and a brief reflection on peace. He spoke also in Spanish, in a deliberate signal to the Latin American Catholic world that had been so much a part of his own life. The first appearance was notably restrained, in keeping with what those who know him have described as his reserved personal style.

Several aspects of the election were historically significant. He is the first American pope in the 2,000-year history of the office. He is the first Augustinian to hold the office. He is the first pope to have dual citizenship of the United States and a Latin American country. And the choice of the name Leo, the first time the name had been used in over a century, signaled a deliberate connection to the social teaching tradition that Leo XIII inaugurated.

The first year of the pontificate

The first year of Pope Leo XIV's pontificate, from May 2025 through May 2026, established the priorities that the encyclical now consolidates.

From the beginning, AI was a recurring theme. Pope Leo XIV addressed the technology in his early Wednesday audiences, in messages to international conferences, in his 2026 World Day of Peace message, and in his 2026 World Communications Day message. The September 2025 Vatican Dicastery for Communication warning on synthetic media was the first such Vatican statement specifically addressing AI-generated content depicting an identifiable person, in response to dozens of deepfake videos of the Pope that had circulated since his election.

Beyond AI, the first year addressed traditional papal concerns: peace negotiations in active conflicts, the situation of migrants and refugees, the relationship between the Catholic Church and other Christian communities, the moral demands of economic justice, and the place of the Church in a secular world. The pope has made strategic foreign trips and has used the daily homilies as a teaching platform.

What has become clear across the year is that Pope Leo XIV intends his pontificate to operate at the intersection of pastoral presence and substantive teaching. The encyclical releasing May 25, 2026, is the first major formal exercise of that teaching authority. It will not be the last.

Character and pastoral style

Those who have worked closely with Pope Leo XIV describe a consistent set of personal qualities that show up across his various roles. He is reserved by temperament, given to listening more than speaking, and slow to take positions in conversations before he has thought them through. He is multilingual, comfortable in English, Spanish, Italian, French, and Portuguese, and able to read Latin and German. He is described by collaborators as judicious, capable of synthesizing complex issues, and unafraid of difficult decisions when he has reached one.

His pastoral style is hands-on. The same priest who waded through flooded streets in Peru in his thirties is, in his late sixties, the bishop who personally visits prisons and the pope who insists on meeting ordinary pilgrims in his audiences. The institutional position has changed; the underlying pastoral posture has not.

The Augustinian background is the unifying thread. Augustinian spirituality is characterized by an interior orientation, a commitment to community, an appetite for study, and an active engagement with the world. All four are present in his public life. The interior orientation gives his teaching a contemplative texture even when the subject matter is policy. The commitment to community shows up in his collegial style of leadership. The appetite for study shows up in the precision of his formal documents. The active engagement with the world is what makes the AI encyclical possible at all.

Why this biography matters for the encyclical

A papal encyclical is, formally, the teaching of the universal Church. It is not the personal opinion of the man who signs it. But every encyclical is also shaped by the person who writes it, and the biography of Pope Leo XIV shapes Magnifica Humanitas in ways that are worth seeing.

The mathematical background gives him an unusual capacity to engage with the technical substance of AI rather than treating it as a black box. The decades in Peru give him a pastoral feel for the human cost of technological change on the poor. The Augustinian formation gives him the inward orientation that allows the encyclical to treat AI as fundamentally an anthropological question rather than a technical one. The leadership of an international religious order gives him institutional competence in the kind of multilateral engagement the encyclical calls for. The personal experience of being deepfaked, which began within weeks of his election, gives him direct standing on the question of what synthetic media does to the person depicted.

None of this means the encyclical is merely autobiographical. It means the encyclical is being written by someone whose life prepared him in particular ways for the question it addresses. That is the case for every major papal teaching document, and it is the case here.

The first papal encyclical on AI is being released on May 25, 2026, by a 70-year-old American Augustinian who spent his thirties in Peru, his forties leading a worldwide religious order, his fifties as a bishop in Latin America, his sixties as a senior Vatican administrator, and his first year as pope warning that the human person cannot be replaced by a machine. The encyclical is the next chapter in a coherent life. The life is worth knowing if the encyclical is going to be read with the seriousness it deserves.