Castle - motte and bailey, Aclint, Co. Louth

Castle – motte and bailey, Aclint, Co. Louth

Standing on a prominent drumlin above the Lagan River in County Louth, the motte and bailey castle at Aclint represents one of Ireland's early medieval fortifications.

Castle - motte and bailey, Aclint, Co. Louth

The site features a substantial flat-topped mound, roughly 36 metres across at its base and rising about 8 metres high, with the summit platform measuring approximately 15 metres in diameter. This earthen mound, constructed from layers of earth and stone, is surrounded by a defensive ditch or fosse that runs about 9 metres wide and drops to a depth of 1.7 metres below the surrounding ground level.

To the southeast of the motte lies a sub-rectangular bailey; essentially a defended courtyard measuring about 37 by 36 metres. This enclosed area sits roughly 1.7 metres above the natural ground level and would have once contained the everyday buildings of the castle complex, including stables, workshops, and living quarters for the garrison. A faint trace of another defensive ditch can still be spotted along the bailey’s southeastern edge, though it’s far less pronounced than the main fosse, reaching only about 0.65 metres in depth where visible.



At the top of the motte, visitors can make out a circular depression about 5 metres across, marked by a low earthen bank. This likely indicates where a wooden tower or keep once stood; the main defensive structure that would have commanded views across the surrounding countryside. These timber buildings have long since vanished, leaving only these subtle earthworks to hint at the castle’s former appearance during its active use in the medieval period.

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Anon. 1924 Louth Ordnance Survey Letters. County Louth Archaeological and Historical Society Journal, vol. 5, 4, 278-82.
Aclint, Co. Louth
53.92289855, -6.63992572
53.92289855,-6.63992572
Aclint 
Mottes & Baileys 

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