The failed 1584 meeting between the English and French Templars

The failed 1584 meeting between the English and French Templars is the missed rendezvous at the center of Casaubon’s speculative history of the Templar Plan. A difference between the English and French calendars gives the absence of the two groups a deceptively ordinary cause; in the characters’ retelling, that error becomes the hinge on which generations of secret history turn. The episode shows how a plausible coincidence can be made to bear the weight of an immense conspiracy.

The calendrical explanation

Casaubon’s reconstruction begins with a date: Saint John’s Eve, June 23, 1584. France had adopted the Gregorian calendar in 1583, while England did not adopt it until 1752. In the novel’s account, the ten-day difference meant that when it was June 23 in France, it was still June 13 in England. The French participants would therefore have observed their appointment on a different day from the English, even though each side believed it was keeping the agreed date.

The rendezvous is imagined as furtive rather than ceremonial, set for a particular corner at a particular hour. The French arrive first, wait for days, and eventually leave, concluding that some misfortune has prevented the meeting. The English arrive later, on what their calendar calls June 23, and find no one. The two groups do not fail through betrayal or open conflict; they pass one another in time. That small administrative discrepancy supplies Casaubon with a mechanism capable of explaining a supposedly consequential rupture.

From missed appointment to historical chain

Casaubon extends the calendar theory beyond the meeting itself. He proposes that John Dee, an English mage and astrologer to the queen, was assigned to study the calendar reform around 1584. In this account, Dee’s research becomes an attempt to discover why the rendezvous failed. Casaubon links that imagined inquiry to Dee’s reading of Trithemius, his connection to the alchemical circles of Prague, and his meeting with Heinrich Khunrath. The chain then reaches Francis Bacon, whom Casaubon presents as a later figure associated with the Rosicrucians and with the idea of a House of Solomon.

This account is delivered as inference, not as independently verified fact. Casaubon describes his discovery as an almost invisible clue found in his card files, then builds a broad historical sequence around it. Its momentum comes from the way each familiar name appears to confirm the preceding connection: calendar reform points toward Dee; Dee’s supposed regret points toward further research; and that research appears to lead into the later traditions Casaubon is trying to organize into the Plan.

The Refuge and Guillaume Postel

A second strand makes Saint-Martin-des-Champs the meeting’s supposed destination. Casaubon identifies Guillaume Postel as the French group’s grand master and argues that the monastery was the Refuge where the Templars could remain safe. In his reconstruction, Postel retired there after retracting his heresies, waited for the 1584 appointment, and died in 1581, three years too soon to solve the calendar confusion. Postel’s absence thus becomes another explanation for why the French side failed to recognize what had happened.

Casaubon presents the conclusion as a mosaic whose pieces fit: Saint-Martin-des-Champs was the Refuge, and Postel’s death left the French group without the person best equipped to interpret the date. The argument gives a Parisian religious site a hidden strategic identity, turning the monastery into both shelter and waiting place. Yet the neatness of the fit is itself part of the scene’s significance: Casaubon’s assurance that the evidence coheres exceeds what the evidence can independently establish.

Jesuit knowledge and the Plan’s afterlife

The missed meeting also gives Casaubon a way to explain the Jesuits’ alleged involvement. He reasons that Postel had briefly joined the Jesuits and sworn obedience to Ignatius Loyola; from this, he supposes that Postel disclosed the Templar secret. The Jesuits, he argues, watched Postel in expectation of the 1584 meeting, but his death prevented them from learning the identity of his successor. An unknown Jesuit at Postel’s deathbed becomes a suggestive detail in this theory, though not proof that the order knew the rendezvous had failed.

Belbo objects to the logical gap: if the Jesuits did not know what happened in 1584, their supposed knowledge of the Templar secret cannot straightforwardly explain their later actions. Diotallevi answers that the Jesuits were difficult to deceive, but the exchange leaves the question unresolved. The missed appointment therefore does more than furnish a backstory: it exposes the Plan’s method of turning uncertainty into further connection. A calendar discrepancy can explain an absence; the explanation then generates new hidden agents, motives, and inheritances, while each unresolved link invites another conjecture.