Marcello Semeraro was born on 22 December 1947 at Monteroni di Lecce in Apulia and was ordained a priest on 8 September 1971. He took a doctorate in theology at the Pontifical Lateran University in 1980 and made his name as an ecclesiologist, the study of what the Church is, publishing Mistero, comunione e missione and teaching at the Lateran. He was appointed Bishop of Oria on 25 July 1998 and consecrated that September.
On 1 October 2004 he was made Bishop of Albano, one of the suburbicarian sees around Rome, and he governed it for sixteen years. On 13 April 2013, a month into the new pontificate, Francis named him secretary of the Council of Cardinals, the body of eight and later nine cardinals convened to advise on governance and to redraft the constitution of the Roman Curia. He held that post through the whole drafting of what became Praedicate Evangelium.
On 15 October 2020 Francis appointed him Prefect of the Congregation for the Causes of Saints, succeeding Cardinal Becciu, who had resigned three weeks earlier. He was created a cardinal at the consistory of 28 November 2020 with the deaconry of Santa Maria in Domnica. He was an elector in the conclave of 2025, and it fell to him to steer the causes of Carlo Acutis and Pier Giorgio Frassati, canonized together by Leo XIV on 7 September 2025 after the ceremony was postponed by the death of Francis.
Consequential Quotes
Our work of discernment in the causes of saints is not done primarily with the head or with feelings, but on our knees, praying and asking for the light of the Spirit.
While the heroes of this world show what a person can do, the saint shows what God can do.
Canonizing one of its sons or daughters, the church is not exalting a human work but is celebrating Christ alive in him or her.
Major Works & Initiatives
Prefect for the Causes of Saints
Head of the dicastery that examines every cause for beatification and canonization, weighs the alleged miracles and puts the finished case before the pope. He took the office three weeks after Becciu vacated it.
Secretary of the Council of Cardinals
Note-taker and secretary to the C9, the advisory body Francis created in the first month of his pontificate to reform the Roman Curia. He served through the long drafting that produced the apostolic constitution Praedicate Evangelium in 2022.
The canonization of Acutis and Frassati
Shepherded to completion the cause of Carlo Acutis, the first saint of the millennial generation, and that of Pier Giorgio Frassati. The ceremony set for 27 April 2025 was postponed by the death of Francis and was celebrated by Leo XIV on 7 September 2025.
Twenty-two years a diocesan bishop
Bishop of Oria from 1998 and of Albano, a suburbicarian see on the edge of Rome, from 2004 until his call to the Curia in 2020.
Controversies
Inheriting Becciu's dicastery
Semeraro took the Causes of Saints three weeks after Becciu resigned it amid the investigation that led to his conviction, and part of the money at issue in that case had passed through the dicastery's accounts. No accusation has ever attached to Semeraro, and his appointment was widely read as a deliberate choice of a quiet canonist-theologian to steady a department under a cloud. The awkwardness is one of sequence rather than of conduct.
The pace of canonizations
A standing criticism in traditional circles is that saints are now made too quickly and too many, that the reform which abolished the old adversarial role of the Promoter of the Faith, the so-called devil's advocate, in 1983 left the process without a built-in prosecutor, and that rapid canonizations of recent popes strained the older discipline. The reform predates Semeraro by decades and he did not design it, but he administers it, and the volume of causes concluded on his watch keeps the question live. His own answer has been to insist that the work is discernment rather than administration, done "on our knees."
Praedicate Evangelium and the shape of the Curia
As secretary of the Council of Cardinals he sat at the centre of the nine-year redrafting of the constitution governing the Roman Curia. Its critics argue that placing lay men and women at the head of dicasteries by delegated papal authority loosens the link between governance and holy orders, and that the reform centralized as much as it decentralized. Its defenders answer that jurisdiction in the Curia has always flowed from the pope rather than from ordination, and that the constitution simply says so. Semeraro's own role was to record and draft rather than to decide.
No liturgical record
As with a number of curial figures, readers looking for where Semeraro stands on the Traditional Latin Mass, Summorum Pontificum or Traditionis Custodes will not find a public position. He is an ecclesiologist and an administrator of causes; his published work concerns the nature of the Church, communion and mission rather than the rite. It is more accurate to record the silence than to read a stance into it.