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Grianan of Aileach

Also known as Grianán of Aileach

The Grianan of Aileach is a circular stone fort on a hilltop in County Donegal, overlooking Lough Swilly and Lough Foyle. Traditionally the royal seat of the northern Uí Néill kings of Ailech, it was reportedly destroyed by Muirchertach Ua Briain in 1101. The surviving stone ringfort was heavily reconstructed in the 1870s.

Grianan of Aileach
Image: Silyba · CC BY-SA 4.0 · Wikimedia Commons

Mentioned in 2 state histories

VennicniiKingdom of Ailech

See also

Cite this entry
APA
The Epoch Institute. (2026). Grianan of Aileach. In The Epoch Institute Encyclopedia. https://the-epoch-institute.org/encyclopedia/grianan-of-aileach
MLA
“Grianan of Aileach.” The Epoch Institute Encyclopedia, The Epoch Institute, 2026, https://the-epoch-institute.org/encyclopedia/grianan-of-aileach. Accessed .
Chicago
The Epoch Institute. “Grianan of Aileach.” The Epoch Institute Encyclopedia. 2026. https://the-epoch-institute.org/encyclopedia/grianan-of-aileach.
Harvard
The Epoch Institute (2026) ‘Grianan of Aileach’, The Epoch Institute Encyclopedia. Available at: https://the-epoch-institute.org/encyclopedia/grianan-of-aileach (Accessed: ).

Last reviewed October 2026Random entry ↻