[1] Breastagh Ogham Stone stands in a field 4.2 km (2.6 mi) north-northwest of Killala town.

[4][5] The ogham stone was found lying in a field in April 1874 by an English tourist, W.K.

Dover, and brought to the attention of Sir Samuel Ferguson, who had it re-erected.

᚛ᚂᚓᚌᚌ[--]ᚄᚇ[--]ᚂᚓᚌᚓᚄᚉᚐᚇ᚜ / ᚛ᚋᚐᚊ ᚉᚑᚏᚏᚁᚏᚔ ᚋᚐᚊ ᚐᚋᚋᚂᚂᚑᚌᚔᚈᚈ᚜ (L[ ... ]G̣G̣[ ... ]SD[ ... ]LENGẸṢCẠ[D] / MAQ CORRBṚI MAQ AMMLLỌṆG̣[I]ṬT, "Legescad, son of Corrbrias, son of Ammllogitt") is carved on it.

This is believed to refer to a grandson of Amalgaid mac Fiachrae (d. AD 440), King of Connacht of the Uí Fiachrach, who gives his name to the barony of Tirawley and earlier to the túath of (Tír Amhlaidh).