Secret Societies Throughout History

The fascination with secret societies is one of the most durable features of Western culture. From the Eleusinian Mysteries of ancient Greece to the modern Bilderberg Meeting, the idea that small groups of initiated members wield disproportionate influence has shaped religious, political, and intellectual life for nearly three millennia. The Bavarian Illuminati of 1776 are the central pivot of the modern version of this fascination, and the modern conspiracy theory is the most consequential inheritance of an idea that long predates the order.

This guide surveys the historical societies that actually existed, the societies that were invented, and the lines between them. It is organised chronologically, with the caveat that the chronology is not the only structure that matters: the most important intellectual move in the modern conspiracy literature is the construction of a continuous chain of esoteric transmission from the ancient mystery schools through the modern Illuminati, and the chain does not exist in the documentary record.

A Working Vocabulary

Three distinctions are useful. The first is between esoteric societies, which guard secret teachings accessible only to initiates; political conspiracies, which operate clandestinely to advance specific political aims; and fraternal organisations, which use ritual and symbolism primarily to build in-group identity. The Bavarian Illuminati combined elements of all three, and the combination has made it a useful template for later conspiracy theories.

The second is between historical and mythological societies. The Knights Templar, the Rosicrucians, the Freemasons, the Bavarian Illuminati, and Skull and Bones are historical organisations, with documented origins, members, and activities. The Priory of Sion, in its classic form, is a modern myth with no historical basis. The lines between the two categories are not always sharp, and the mythological versions often draw on the historical ones for symbolic and narrative material.

The third is between secrecy of existence and secrecy of membership. Most so-called secret societies have been well-known, well-documented, and widely discussed in their own time. Their secrecy has been primarily a matter of internal ritual confidentiality, not of the concealment of their existence. The real purpose of secrecy in these organisations has usually been social: the marking of a boundary between insiders and outsiders, the creation of an in-group identity, and the use of ritual drama to build trust among members.

The Ancient Mystery Schools

The earliest identifiable secret societies in Western culture are the mystery schools of ancient Greece, Egypt, and the broader Mediterranean world. These were religious and philosophical organisations that offered initiates access to secret knowledge about the nature of the gods, the afterlife, and the cosmos. The most famous were the Eleusinian Mysteries, the Orphic Mysteries, the Dionysian Mysteries, and the Mithraic Mysteries.

The Eleusinian Mysteries, centred on the town of Eleusis near Athens, are the best-documented. They were open to all Greek-speaking adults who could afford the initiation fee and who had not committed certain ritual offenses. Initiates underwent a multi-stage process of purification, fasting, and ritual drama, culminating in a dramatic reenactment of the myth of Persephone’s descent into and return from the underworld. The initiates were sworn to secrecy about the content of the rites, and the penalty for breaking the oath was death. The Eleusinian Mysteries flourished for nearly two thousand years, from around 1450 BCE to the late fourth century CE.

The Mithraic Mysteries, originating in the Persian cult of Mithras, became popular among Roman soldiers in the first through fourth centuries CE. They featured elaborate initiation rituals, seven grades of advancement, and a strong fraternal element. The Orphic and Dionysian Mysteries, named after the mythical poet Orpheus and the god Dionysus, were more diffuse but spread widely across the Greek world. They emphasised personal salvation, ritual purification, and a body of esoteric teachings about the soul’s journey after death.

The most striking thing about the ancient mystery schools, from the perspective of later secret society mythology, is that they were not, in any meaningful sense, “secret” in their existence. Their existence was widely known, their initiates were public, and their festivals were major civic events. What was secret was the content of the highest initiations. This pattern — a known organisation with secret inner teachings — would be repeated in many later esoteric groups.

Roman and Hellenistic Associations

The Hellenistic and Roman worlds produced a variety of secret or semi-secret associations. The most important were the collegia of the Roman world — private associations of merchants, craftsmen, religious devotees, and burial clubs. The collegia were often semi-secret in that their internal affairs were not public, and many of them used initiation rituals and patron deities. Roman political life also produced various informal and semi-organised groups, including the late-republic optimates and populares, the imperial Praetorian Guard, and the various mystery cults imported from the East. The early Christian church itself was, from the perspective of Roman authorities, a kind of secret society — refusing to sacrifice to the official gods, meeting in private homes, and using ritual meals and baptismal rites whose meanings were concealed from outsiders.

The Roman world also produced the first great conspiracy theory about a secret society. The Bacchanalia scandal of 186 BCE, in which the Roman Senate alleged that the Bacchic cult was a site of conspiracy, murder, and sexual license, led to a major crackdown and the suppression of the cult throughout Italy. The Senate’s claims were almost certainly exaggerated, but the episode established a template — the supposedly secret society as a threat to public order — that has been repeated many times since.

The Knights Templar

The Knights Templar were founded in 1119 CE, in the wake of the First Crusade, as a small military order of monks dedicated to protecting Christian pilgrims in the Holy Land. The order grew rapidly over the next two centuries, becoming a major international financial and military power. By the early fourteenth century, the Templars had established a network of castles, commanderies, and financial operations across Europe and the Middle East, and they had accumulated enormous wealth.

The Templars were suppressed on Friday, 13 October 1307. King Philip IV of France, deeply in debt to the order, moved against the Templars in a coordinated crackdown. Hundreds of Templars were arrested, tortured, and forced to confess to a long list of alleged crimes, including heresy, blasphemy, sodomy, and the worship of a mysterious idol called Baphomet. The order’s last grand master, Jacques de Molay, was burned at the stake in 1314. The historical Templars were, in fact, a major military and financial organisation whose suppression was driven by Philip’s political and financial needs, and the confessions extracted under torture were not credible. The order’s dramatic history and the long chain of mythologisation that followed have made the Templars a fixture of secret-society mythology ever since.

The most consequential 19th-century development was the publication, beginning in the 1960s and 1970s, of a series of documents known as the “Dossiers Secrets” that purported to show that the Templars had been the guardians of a secret bloodline descended from Jesus Christ and Mary Magdalene. The documents were eventually shown to be the work of Pierre Plantard, a French con man, and the Priory of Sion they purported to describe has no historical existence prior to the 1960s. The myth persists in the modern conspiracy literature, particularly through the popular success of Michael Baigent, Richard Leigh, and Henry Lincoln’s 1982 The Holy Blood and the Holy Grail and Dan Brown’s 2003 The Da Vinci Code.

The Rosicrucians

The Rosicrucian order announced itself in a series of three manifestos published in the early 17th century. The Fama Fraternitatis (1614), the Confessio Fraternitatis (1615), and the Chymical Wedding of Christian Rosenkreutz (1616) told the story of Christian Rosenkreutz, a German monk who had travelled to the Middle East, studied with the sages of Damascus and Egypt, and returned to found a secret order dedicated to the reform of European learning. The manifestos were probably the work of a small group of Lutheran reformers influenced by the esoteric traditions of Paracelsus and the Hermetic tradition.

Whether the order actually existed in the form described in the manifestos is doubtful. What is clear is that the manifestos had an enormous influence on later esoteric thought. They established the model of a hidden, ancient, and morally serious fraternity devoted to universal knowledge and the reform of human affairs. By the 18th century, the Rosicrucian tradition had merged with Hermeticism, alchemy, and the Masonic tradition. Various Rosicrucian orders, most prominently the Ancient Mystical Order Rosae Crucis (AMORC), were founded in the nineteenth and twentieth centuries, claiming continuity with the original 17th-century manifestos. These modern Rosicrucian organisations are esoteric fraternal bodies, not conspiratorial secret societies, but the Rosicrucian myth has been a major contributor to the broader narrative of a hidden esoteric tradition stretching back centuries.

Freemasonry

Freemasonry is the largest, oldest, and most influential of the modern fraternal traditions. Its origins are in the late medieval and early modern stonemasons’ guilds of Britain and Scotland, which used secret signs, passwords, and rituals to identify qualified members. By the late sixteenth and early seventeenth centuries, these operative guilds had begun to admit “accepted” or “speculative” members — gentlemen, scholars, and gentlemen who were not actually stonemasons but who were attracted to the guilds’ ritual and symbolism.

The first Grand Lodge of Freemasonry was established in London in 1717, and the order spread rapidly across Europe, the Americas, and the British Empire in the 18th century. The Masonic tradition combined stonemasons’ craft symbolism, Christian and Hermetic esoteric elements, and Enlightenment philosophical content. The order’s ritual structure, based on the three degrees of Entered Apprentice, Fellowcraft, and Master Mason, became the template for dozens of later fraternal orders, including the Bavarian Illuminati. Masonry’s role in 18th-century political and intellectual life was substantial: the order attracted many of the leading figures of the Enlightenment, including Voltaire, Benjamin Franklin, George Washington, and Wolfgang Amadeus Mozart.

The relationship between Freemasonry and the Bavarian Illuminati is the central pivot of the modern conspiracy theory. The Illuminati drew heavily on Masonic ritual and recruited heavily from Masonic lodges, but the relationship was never comfortable. The Illuminati’s attempts to infiltrate and redirect Continental Masonry contributed to its downfall, and the post-1785 conspiracy theory routinely conflates the two organisations. The reality is that they are distinct, with different origins, different structures, and different histories.

The Bavarian Illuminati

The Bavarian Illuminati, founded by Adam Weishaupt in Ingolstadt on 1 May 1776, are covered in detail in the complete history of the Illuminati. For the purposes of the present survey, what needs to be noted is the Illuminati’s specific position in the 18th-century landscape of secret societies. The order was unusual in its explicit political programme. Most fraternal organisations of the period — including Masonry, Rosicrucianism, and the various chivalric orders — avoided direct political engagement. Weishaupt and his collaborators openly intended to use the order as a vehicle for the propagation of Enlightenment values and the reform of church and state. The order’s suppression in 1785, and the public confiscation of its papers, is the source of the modern conspiracy theory.

The Hellfire Club

The Hellfire Club — more properly several clubs of the same name in 18th-century Britain and Ireland — was a different kind of secret society. Its members were aristocrats, politicians, and rakes who gathered for drinking, gambling, and elaborate sexual play. The most famous chapter, the Order of the Friars of St. Francis of Wycombe, met at the home of Sir Francis Dashwood at Medmenham Abbey and was associated with mock-religious rituals, blasphemous parodies, and general debauchery. The historical Hellfire Clubs were not, in any meaningful sense, political or ideological secret societies. They were aristocratic drinking clubs with a taste for transgression.

The Thule Society

The Thule Society was founded in Munich in 1918, in the chaotic months following the German defeat in World War I. The society was a small, esoteric, and antisemitic organisation that combined elements of the Ariosophical tradition — a völkisch offshoot of Theosophy — with anti-communist and nationalist politics. The society is best known as a precursor to the National Socialist German Workers’ Party: several early Nazi party members, including Rudolf Hess and Karl Harrer, were Thule Society members. The Thule Society was not, despite persistent claims to the contrary, a continuation of the Bavarian Illuminati. The two organisations had no direct connection.

Skull and Bones

Skull and Bones is a senior secret society at Yale University, founded in 1832 by William Huntington Russell and Alphonso Taft. The society selects fifteen members each year from the Yale senior class and inducts them into an exclusive alumni network. Members are bound by lifelong secrecy about the society’s rituals, which reportedly include a candlelit ceremony, encounters with the society’s totemic symbols (skull and crossbones, the number 322, and various esoteric images), and elaborate initiation rites.

Skull and Bones has been the subject of conspiracy theories since at least the late 19th century. The society’s most famous members include William F. Buckley Jr., George H.W. Bush, and George W. Bush, and the two Bush presidencies led to a wave of speculation about the society’s influence. The historical record supports a more modest interpretation: Skull and Bones is an unusually exclusive social network that provides its members with lifelong connections, mutual aid, and a sense of shared identity. The actual political influence of the society, as a coordinated force, is much smaller than conspiracy theorists claim.

Bohemian Grove and the Bilderberg Group

The Bohemian Grove is a private retreat for elite men in Monte Rio, California, in operation since 1872. The annual gathering draws around three thousand attendees each summer, including senior U.S. politicians, business executives, foreign heads of state, and major cultural figures. The retreat is famous for its elaborate “Cremation of Care” ceremony, in which members ritually burn an effigy of “Care” at the edge of a lake, and for its general atmosphere of leisurely, all-male sociability.

The Bilderberg Group — actually the Bilderberg Meeting — is an annual conference founded in 1954, drawing together about 130 of the world’s most powerful figures in politics, finance, industry, and media. The first meeting was held at the Hotel de Bilderberg in the Netherlands, hence the name. Both Bohemian Grove and the Bilderberg Meeting are real organisations with documented membership and observable activities. The conspiracy theory surrounding both is that they are sites of coordinated elite decision-making that shapes world events behind closed doors. The more sober interpretation is that they are networks in which powerful people meet, exchange views, and form personal connections — which is what powerful people do in such gatherings.

The Priory of Sion Myth

The Priory of Sion is a different kind of case. According to the conspiracy theory, the Priory of Sion is an ancient secret order founded in 1099 in the Holy Land, dedicated to guarding the secret of the bloodline of Jesus Christ. The order supposedly survived for centuries under various cover organisations, including the Knights Templar, and was behind a long series of European political and cultural events.

The Priory of Sion, in this form, is a modern invention. The entire edifice rests on documents called the Dossiers Secrets, supposedly discovered in 1967 in the Bibliothèque nationale de France. These documents were actually forged in the 1960s and 1970s by Pierre Plantard, a French right-wing activist, and his associates. Plantard was eventually forced to admit the forgery, and the Priory of Sion was definitively debunked as a historical organisation. The myth became internationally famous through The Holy Blood and the Holy Grail (1982) by Baigent, Leigh, and Lincoln, and later through Dan Brown’s The Da Vinci Code (2003).

The Carbonari and Revolutionary Societies

The Carbonari were a network of secret revolutionary societies active in Italy, France, Spain, and Portugal in the early 19th century. They played a central role in the Neapolitan revolution of 1820 and various other uprisings against the restored monarchies of the post-Napoleonic settlement. The Carbonari helped popularise the organisational form of small, hierarchical, oath-bound cells operating clandestinely against an established regime — a form that would be used by later revolutionary movements, including the Mazzinian Young Italy, the Irish Fenians, and eventually the Russian Narodnaya Volya and the Bolsheviks.

The link to the Illuminati in the conspiracy literature is rhetorical rather than historical. The Carbonari’s ideology was more nationalist and Catholic than Weishaupt’s rationalist cosmopolitanism, and the two organisations were not in any documented continuity.

Common Patterns

A few patterns run through the history of secret societies. The first is the boundary between history and myth. Almost every real secret society has accumulated layers of mythologisation, often distorting the historical record beyond recognition. The Knights Templar became a fixture of occult and esoteric tradition within a few generations of their suppression. The Bavarian Illuminati became the central villain of an entire genre of counter-revolutionary literature within a few years of their suppression. The Priory of Sion was invented out of whole cloth in the 1960s.

The second is the role of esoteric symbolism. From the ancient mystery schools to the modern Masonic tradition, secret societies have used shared symbols, ritual gestures, and initiatory language to mark membership and build in-group identity. The use of these symbols is real, and the symbols themselves have real historical meanings, but the meanings are almost always more modest than the conspiracy theory suggests.

The third is the function of conspiracy theory in political life. Secret societies have been used, by their enemies, as explanations for the otherwise mysterious. The French Revolution had to be the work of the Illuminati because the alternative — a complex, multi-causal social process — was politically unacceptable to the European conservative order. The Holocaust had to be the work of a Jewish conspiracy because the alternative — a long history of European antisemitism combined with specific German conditions — was too uncomfortable to acknowledge. Conspiracy theories are political instruments, and their persistence is best understood in political terms.

The fourth is the role of gender and exclusion. Almost every secret society in this history has been a male-only organisation, often with explicit oaths of secrecy and elaborate initiation rituals reserved for men of a particular class, ethnicity, or religion. The historical exclusion of women from these organisations is itself a major factor in their modern mythologisation. Women, racial and ethnic minorities, and working-class men were often the targets of conspiracy theories that attributed enormous, almost magical, power to the closed fraternal orders that excluded them.

The fifth is the commercial exploitation of the myth. The Illuminati legend has been a major commercial product since the late 19th century. Books, pamphlets, lectures, radio programs, and now online courses and merchandise have all made money by selling the conspiracy theory to interested audiences. The commercial ecosystem around the myth has its own dynamics, distinct from the underlying political or psychological factors, and these dynamics have played a major role in the persistence and evolution of the modern legend.