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Magical runic inscription found in the manuscript Cotton Caligula A XV with runic transliteration ( kurilsarþuarafarþunufuntinistuþuruigiþik ¶ þorsatrutiniurilsarþuarauiþraþrauari · )

Canterbury charm

An Old Norse runic spell against infection found in an Anglo-Saxon manuscript.

Historical

Photo: Mårtensås, CC BY-SA 4.0, via Wikimedia Commons

The Canterbury charm is a short Old Norse incantation written in runes. It appears in the margins of a 1073 English manuscript. Practitioners used it to cure a specific type of pus.

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  • Found in Cotton Caligula A.xv manuscript
  • Written in Old Norse runes
  • Dates to the year 1073
  • Invokes Thor against Gyril
  • Compares to Sigtuna amulets

What it is

This entry is a brief magical text preserved within a larger book. The words are written using Old Norse runes. They appear in the blank space at the bottom of pages in a specific manuscript from England. The text dates to the year 1073. Scholars identify it as a charm meant for healing. It invokes the god Thor to fight a wound-causer named Gyril. The goal is to stop a condition described as pus in blood vessels.

Where it comes from

The charm sits inside a manuscript held in London today. That book was made in 1073. The runes themselves belong to the Old Norse tradition. Researchers compare this text to other finds from Sweden. One similar object is an amulet from Kvinneby. Another comes from Sigtuna. These links suggest the charm shares roots with Scandinavian practices brought to England.

How it is done

The text is not a set of instructions for action. It is a direct address to a spirit or force. The writer calls out to Gyril. They command the entity to leave. Then they ask Thor for help. The god is asked to bless the victim. This structure relies on authority and divine power. It does not describe physical steps like mixing herbs.

Tools and materials

The primary tool is the rune script itself. The characters carry the magical weight. The manuscript paper serves as the container. No physical objects like stones or plants are mentioned. The power lies entirely in the written words and their meaning.

Canterbury charm, drawn and placed

Emblem With the book shape. Drawn from this page, not a photograph.
  1. Living
  2. Revived
  3. Fading
  4. Historical
  5. Legendary
  6. Performed
Standing: Historical Documented in the past; no continuous living tradition today. This says whether people still do it, not whether it works.
A book with a clasp: grimoires, papyri and manuals of rites, and the learned side of magic.
Lineage
Old Norse magic
Timing
during illness
Where it sits The tradition it belongs to, and when it is done.

What it is for

People used this charm to treat a medical issue. The ailment involves pus and blood vessels. It is a form of folk healing. The user seeks protection from a harmful agent. They call upon a deity known for fighting giants. The intent is to remove the cause of the sickness.

Who does it

The original user remains unknown. We only have the written record. Modern scholars study the text for its language. They look at how Thor is portrayed. The charm shows Thor acting as a healer. This role is less common than his warrior side. Experts analyze the formula structure.

Peoples and places

The manuscript is Anglo-Saxon. The language of the charm is Old Norse. This mix points to cultural contact between Scandinavians and English people. Similar charms exist in Sweden. The Sigtuna rib bone and amulets show shared beliefs. The practice crosses national borders of that era.

At a glance: who, where and when

What people believe

The text assumes Thor can intervene in human health. He is seen as a protector against evil forces. Gyril is viewed as a source of disease. The charm treats the illness as an external attack. Divine blessing is required to overcome it. This reflects a worldview where gods manage daily dangers.

When it is done

No specific festival or date is linked to this charm. It was likely used when the illness struck. The timing depends on the patient's need. It is a response to a crisis rather than a seasonal ritual.

How scholars and sceptics see it

Researchers like MacLeod and Mees have analyzed the text. They note Thor is rarely called a healer in other sources. They highlight his role as a giant-slayer instead. The charm compares to other Swedish finds. Scholars use these comparisons to understand Viking-age medicine.

Cautions and what is closed

The charm addresses a serious infection. Pus in blood vessels can be fatal. In the past, such texts were vital care. Today, we know this requires medical treatment. The historical context shows desperation and hope.

Compare and confuse

This charm resembles the Kvinneby amulet. Both invoke Thor for protection. The Sigtuna inscriptions offer similar formulas. All three come from the same cultural sphere. They share a method of calling on divine power.

Law and persecution

The manuscript is now a protected artifact. It resides in a British library. There are no laws against studying it. The charm itself has no legal status. It is a historical document of interest.

Questions people ask about Canterbury charm

What is the Canterbury charm?

It is an Old Norse runic text found in an English manuscript from 1073. It serves as a healing spell against a specific type of pus.

Who is Gyril?

Gyril is a wound-causer mentioned in the spell. The charm commands him to go away and asks Thor to bless the victim.

Why is Thor involved?

Thor is known for fighting giants. The charm uses his protective power to drive away the illness-causing entity.

Where else do similar charms exist?

Similar texts appear in Sweden. Examples include the Kvinneby amulet and inscriptions from Sigtuna.

Good reading and sources

Where this page comes from

The facts on this page come from the Wikipedia article "Canterbury charm", written by its contributors and used under the CC BY-SA 4.0 licence, and from its Wikidata record (CC0). EveryJaadu rewrote the text in its own words, with AI assistance, and compares every page with the article to make sure no passage is copied. It may be reused under the same CC BY-SA 4.0 licence with a link back.

It may contain mistakes. Names and customs differ from one community to the next, and some knowledge is closed to outsiders and left out here. This page describes belief and practice. It does not say that any of it works, it is not a how-to, and it is not medical advice. If something is wrong, tell us. Last refreshed 2026-10-22.

Photo credits on this page

The small pictures above come from Wikimedia Commons under free licences. Some are cropped to fit.

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