Manannán mac Lir: Manannán mac Lir is a revered sea god and king of the Otherworld in Gaelic mythology.

Manannán mac Lir - As a central figure in Celtic mythology, Manannán mac Lir epitomises the mysterious allure of the Otherworld and the boundless nature of the sea, serving both as protector and guide to his people.

Manannán mac Lir

Manannán mac Lir - As a central figure in Celtic mythology, Manannán mac Lir epitomises the mysterious allure of the Otherworld and the boundless nature of the sea, serving both as protector and guide to his people.

Manannán mac Lir is a revered sea god and king of the Otherworld in Gaelic mythology. He wields mystical powers, including the use of a concealing mist of invisibility, to protect his enchanted realm. His legendary artefacts—a self‐navigating boat, a water‐traversing horse, and the sword Fragarach—underscore his divine martial prowess.

Origins & First Encounters

Source Texts & Tale Variants

Form & Powers

Regional Faces

Cultural Parallels

Legacy & Modern Evolution

Interesting Fact

An intriguing aspect of his legend is that the Isle of Man is commonly thought to be named after him, highlighting the profound impact his myth has had on both cultural identity and geographical nomenclature.

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Quick Creature Info

Associations:

Element: WaterMist of invisibilityThe sea

Our Mythic Legendary Rating:

Mythological Sovereign
Mythological Sovereign rating

Also Sometimes Known As:

ManannánManannan beg mac y Leir

Habitat:

Emain AblachOtherworldly islands within the seaOtherworld (Isle of Apple Trees, Plain of Delights, Land of Promise)Sea and the OtherworldCeltic Otherworld and the Irish SeaManannán mac Lir governs a mystical realm accessible through enchanted mists and hidden islandsOtherworldly islands and the seaEmain Ablach, Mag Mell, Tír TairngireGaelic mythological realms

Supernatural Powers:

Invisibility through mystical mistControl over water and the seaDivine authority over the Otherworld

Physical Attributes:

Wields the strength-sapping sword FragarachAssociated with a self‐navigating boatCarries an aura of mystique with a shroud of mistRegal bearingOften shown with flowing hair and occasionally a beardImposing and dignified presence

Abilities:

Creates and wields féth fída (mist of invisibility)Navigates on his self‐directing boat Sguaba TuinneRides Aonbharr, a horse capable of traversing both water and landImmortalityMartial prowessDivine command and resilience

Behavior:

Regal, mysterious, and protectiveActs as a guardian of the Otherworld and employs cunning and mystical arts to safeguard his domain

Lore:

Sea god, warrior, and guardian of the OtherworldGaelic (Irish, Manx, and Scottish)As a central figure in Celtic mythology, Manannán mac Lir epitomises the mysterious allure of the Otherworld and the boundless nature of the sea, serving both as protector and guide to his people

Related Creatures, Tales or Lore

  • M
    Manawydan fab Llŷr
  • D
    Dylan ail Don
  • N
    Njordr

References

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Curated by the Mythological Creatures Team (rev. May 2025)