| Record | OBS-0693 |
|---|---|
| Category | Secret Societies/Groups |
| Status | UNPROVEN |
| Summary | The theory that the Knights Templar, a medieval Christian military order, buried treasures such as the Holy Grail and the Ark of the Covenant on Oak Island. This is often linked to the Cathar theory and the Sinclair expedition. |
| Origin | The theory gained popularity in the 20th century, especially after the publication of 'Holy Blood, Holy Grail' and the TV show The Curse of Oak Island. It is also connected to claims that Prince Henry Sinclair visited Nova Scotia in 1398. |
| Claimed |
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| Evidence / consensus | There is no archaeological or historical evidence for Templar presence in North America. The Sinclair voyage is disputed, and the Holy Grail and Ark are considered mythical or lost. |
Sources are external and provided for verification. Listing does not imply the Observer endorses their claims.