The History of the Fae in Ireland

The Irish concept of “the fae” is ancient, layered, and not originally about tiny winged fairies. It stretches from pre-Christian gods to folklore spirits, shaping thousands of years of belief.


1. The Earliest Roots: The Tuatha Dé Danann

Before Christianity, Ireland’s supernatural beings were the Tuatha Dé Danann — a race of powerful, godlike figures skilled in:

  • Magic
  • Craftsmanship
  • War
  • Poetry and knowledge

They came to Ireland in mythic times and ruled it until the arrival of humans.

Their Defeat & Transformation

When the Milesians (the ancestors of the Irish people) arrived, they defeated the Tuatha Dé Danann. Instead of leaving or dying, the Tuatha:

  • Withdrew beneath the earth
  • Settled in hollow hills, burial mounds, and “Otherworld” realms

This is the origin of the Irish fae as we know them.


2. Aos Sí — The People of the Mounds

Once the gods retreated underground, they became known as the:

Aos Sí (pronounced ees-shee)

Meaning: “People of the mounds”

The word sídh / sídhe refers to:

  • Ancient burial mounds
  • Fairy hills
  • Entrances to the Otherworld

These mounds were viewed as:

  • Doorways to another realm
  • Places never to be disturbed
  • Sacred boundaries between worlds

Nature of the Aos Sí:

They are:

  • Neither mortal nor divine
  • Beautiful, dangerous, and extremely proud
  • Capable of blessing or destroying a human life

They were not cute. They were ancient power.


3. The Fairy Faith (Creideamh Sí)

Over centuries, belief in the Aos Sí blended into everyday life and became known as the Fairy Faith — not a religion, but a set of taboos and respectful practices, such as:

Do NotWhy
Disturb a fairy fort (ancient ring fort)Brings misfortune or death
Cut a lone hawthorn treeSaid to be a fae gathering point
Speak badly of the faeThey hear
Thank them directlyIt implies they owed you something — an insult

Fairies were called:

  • The Good People
  • The Shining Ones
  • The Neighbors

These are euphemisms. Names to avoid provoking them.


4. How Christianity Changed the Fae

When Christianity spread in Ireland, the old gods and spirits couldn’t simply be erased, so they were:

  • Reinterpreted, not removed.

They became:

  • Fallen angels who did not join Lucifer’s rebellion
  • Spirits of the dead
  • Beings “between worlds”

This kept them:

  • Powerful
  • Mysterious
  • Neither good nor evil

This is why Irish fairies are distinct from the more harmless “Victorian fairies” of later English literature.


5. Folklore Types of Fae

Many specific beings emerged from the Aos Sí belief:

NameDescriptionNature
Banshee (Bean Sí)Wails to warn of deathMourning spirit tied to families
Leannán Sí“Fairy lover” giving inspirationGives genius in exchange for lifespan
PúcaShape-shifting trickster (often a horse)Mischievous or dangerous
SelkieSeal-folk who shed skinsTragically bound to land if captured
Aos Sí CourtsOrganized faerie societiesOften ruled by powerful queens or kings

The fae are not a single species — but an entire category of supernatural existence.


6. The Land as a Living Partner

Irish fae belief is deeply tied to:

  • Ancient burial mounds
  • Fairy rings (mushroom circles)
  • Caves
  • Sacred wells
  • Solitary hawthorn trees
  • Remote glens and bogs

The land itself is a threshold.

To this day, roads in Ireland have been re-routed to avoid destroying fairy forts — not out of superstition alone, but out of respect for heritage and the ancient unseen.


7. Modern Day Legacy

Even if belief is less literal now, the fae remain:

  • Cultural guardians of Ireland’s ancient identity
  • Symbols of the unseen world that touches reality
  • A reminder that the landscape is alive, storied, and shared

People still:

  • Avoid cutting lone hawthorns
  • Mark fairy paths
  • Tell stories of encounters

The old respect never died — it just quieted.


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