Padraig Mac Giolla-Domhnaigh

Armstrong—The Laverys, or the sept known as O'Labhradha-Trean, or Strong O'Laverys, have in many instances in the districts of Aghalee, Crumlin, and Lisburn, in Co. Antrim, and in North Co. Down, changed the name to Armstrong. Armstrong is the name of a numerous Scottish Border sept, the two principal families living at Eskdale and Liddesdale, in Roxboro; some families of the latter settling in Ulster.

Alphabetical Index of Anglicised Surnames in Ireland

See also Woulfe’s Irish Names and Surnames
and O'Hart's Irish Pedigrees