Type: supporting argument (off-timeline) · Assessment: weak — the traditions of Simon’s mission and death are late, mutually contradictory, and geographically irreconcilable: Persia (with Jude, martyred at Suanir), Britain, Egypt and North Africa, the Black Sea, the Caucasus. No early or independent witness fixes any one of them; the sources that carry them are the same mutually-dependent apostle-lists that even confuse Simon with Simeon of Jerusalem; and the best-known version, the Persian martyrdom with Jude, is a paired romance built to match the other apostle’s story. That Simon carried the gospel somewhere is likely enough; that we can know where, or how he died, is what the evidence cannot deliver.
… according to the Greeks, he preached on the Black Sea, in Egypt, Northern Africa, and Britain, while, according to the Latin Passio Simonis et Judae… Simon laboured in Persia, and was there martyred at Suanir.
— Catholic Encyclopedia, “St. Simon the Apostle,” summarizing the sources. The claim under test is whether any of the rival mission-and-death traditions can be established as historical — most often the Western favourite, that Simon evangelized Persia with Jude and was martyred there (sawn asunder, or crucified at Suanir), and secondarily the British legend that made him a founder-apostle of the isles.1
The traditions are old enough to deserve a hearing, and not nothing lies behind them. Some mission is antecedently likely: the apostles were sent out, and the wider tradition remembers most of the Twelve carrying the gospel beyond Judaea, so a real journey by Simon is no invention in principle. The Persian pairing is widely attested in the West: the Latin Passio Simonis et Iudae, the Golden Legend, the Breviarium Apostolorum, and the liturgical calendar all agree in sending Simon and Jude together to Persia and keeping their joint feast on 28 October — a broad and ancient consensus within its own stream. Local churches preserved his memory: the Georgians honour a tomb of Simon at Nikopsia in the Caucasus, and the British legend, however late, shows how firmly the apostle was claimed as a founder wherever a church wished an apostolic origin.2
The traditions defeat one another. They cannot be harmonized: Persia, Britain, Egypt, the Black Sea, and the Caucasus are not stages of one itinerary but rival answers to the same question, and at least four of the five must be wrong. They are late and dependent: none goes back to the reliable core, and the earliest to name a field are the mutually-copying apostle-lists, critically judged worthless as history — the same lists that fuse Simon the apostle with Simeon son of Clopas, the bishop of Jerusalem, so that even the identity of the man in view wobbles. The Persian story is derivative: it exists to partner Simon with Jude/Thaddaeus and borrows Matthew’s old adversaries, the sorcerers Zaroes and Arphaxat — a literary construction, not an independent memory — and the Golden Legend itself concedes that the crucified “Simon” of some accounts “was another.” The British legend is later still, a piece of national apostolic ambition with no ancient warrant. And the manner of death is as unfixed as the place: sawn asunder, crucified, or hewn down by a mob, in three different countries. Sean McDowell, grading the martyrdom accounts of the Twelve, rates the evidence for any particular death of Simon among the weakest of all.3
What holds. The bare proposition that Simon preached and died somewhere as a Christian missionary is reasonable, and this wiki does not discount a martyrdom merely because the sources that report it are pious or late. If one strand happens to be true, the Persian mission with Jude is the best-carried candidate within the Western tradition.
What it cannot reach. Likelihood of some mission is not knowledge of which, and every specific claim here fails on the ordinary tests of attestation, independence, and coherence. The fields are irreconcilable; the sources are the least reliable layer of the whole apostolic record and cannot even keep Simon distinct from another man; the flagship Persian story is a paired legend that borrows its villains and doubts its own ending. What survives adjudication is only a probability that Simon, like his fellows, carried the gospel beyond Judaea — a destination unknown. On the specific traditions, the case is weak on the evidence, not on any bar against the miraculous.4
Weak. The mission-and-death traditions of Simon the Zealot are late, contradictory, and carried by the least trustworthy sources in the apostolic dossier, which confuse even his person. That he evangelized somewhere is plausible; that it was Persia, or Britain, or Egypt, and that he was sawn, crucified, or hacked down there, is not what the evidence shows.
Catholic Encyclopedia, “St. Simon the Apostle” (quoted), surveying the Greek (Black Sea, Egypt, North Africa, Britain) and Latin (Persia, Suanir) traditions and the sawn-asunder death. The Persian pairing with Jude and the martyrdom scene: Jacobus de Voragine, the Golden Legend (Legenda Aurea, c. 1260), tr. William Caxton — treated on the Golden Legend detail page. ↩
The Western consensus on Persia and the 28 October feast: Catholic Encyclopedia, “St. Simon the Apostle”; the apostle-list layer (Pseudo-Hippolytus, Pseudo-Dorotheus, Breviarium Apostolorum) is surveyed on the apostles hub. The Georgian tomb-tradition at Nikopsia in Abkhazia and the British legend: the survey in the standard reference article. ↩
On the apostle-lists as mutually-dependent and unreliable as history, and the confusion of Simon the Zealot with Simeon son of Clopas (bishop of Jerusalem, crucified under Trajan aged 120, Hegesippus in Eusebius, Ecclesiastical History 3.32), see the apostle-lists detail page. The sorcerers Zaroes and Arphaxat borrowed from Matthew’s legend, and the Golden Legend’s own hedge (“it was another”): Golden Legend (Caxton). The grading of Simon’s martyrdom among the weakest: Sean McDowell, The Fate of the Apostles (Routledge, 2015). ↩
On the wiki’s method for weighing late and legendary mission-traditions — judging attestation, independence, and coherence rather than ruling out the miraculous a priori — see the apostles hub. The parallel treatment of Jude’s side of the same Persian legend: the Thaddaeus/Jude timeline. ↩