On October 26, 1958, thick white smoke billowed from the Sistine Chapel. In St. Peter's Square, the crowd exulted, the Swiss Guard formed ranks: the world awaited its new Pope. Yet, no one appeared on the balcony. The smoke turned gray, then black. It would take two more days to see Cardinal Angelo Roncalli, the future John XXIII, emerge.
For historians, this is a simple technical incident. But for a fringe of the Catholic world, it is the starting point of the greatest conspiracy in the history of the Church: the Cardinal Siri thesis.
The Ghost Election of "Gregory XVII"
In the tense context of the Cold War, Cardinal Giuseppe Siri, Archbishop of Genoa and spiritual heir to Pius XII, was the great favorite of the conclave. According to proponents of the sedevacantist thesis, Siri was indeed elected on that October 26th, accepting the office under the name of Gregory XVII.
Why did he never appear? The theory advances a scenario worthy of a spy novel: a group of cardinals, linked to Masonic lodges or Soviet intelligence, would have exerted nuclear blackmail. If Siri stepped onto the balcony, the USSR threatened to raze the Vatican or massacre the faithful behind the Iron Curtain. Terrified at the idea of having blood on his hands, Siri is said to have been forced to renounce the papacy.
Why This Theory Does Not Hold Up to History
While this narrative is fascinating, it collapses as soon as it is confronted with concrete facts:
- The Smoke Incident: In 1958, the systems for tinting the smoke were rudimentary (wet straw, chemicals). Similar incidents occurred in 1939 and even in 1978. This was a combustion problem, not a suppressed election.
- The Behavior of Cardinal Siri: If Siri knew himself to be the legitimate Pope, his silence for 30 years would make him a coward. Yet, history shows a devoted man who signed all the documents of Vatican II, celebrated Mass according the new rite, and welcomed John Paul II with full honors.
- The Formal Denial: Questioned in the 1980s by journalists about these rumors, Cardinal Siri himself called these stories "fables."
Sedevacantism: A Psychological Defense Mechanism
So why does this theory persist? Sedevacantism is born from a theological impasse. For those who reject the reforms of Vatican II, it is impossible to accept that the Church could "go astray." The Siri thesis thus offers an escape hatch: it is not the Church that changed, but a "sect of usurpers" who allegedly stole the place of the true Pope under threat.
In the end, the historical truth is more sober: the Church goes through crises and complex debates, but it does not need fictions to survive. Cardinal Siri remained a great servant of the Church, faithful to Rome until his last breath.
To delve deeper into this fascinating subject and discover the details of this investigation, watch the full video below: