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| Mac an Aistrigh | Mac Kinstry: líonmhar: Oirthear Uladh. Albanach, is cosúil. Aistritheach = taistealaí. SI & SGG. |
| Mac an Astraigh | Mac Kinstry: féach Mac an Aistrigh. |
| MacKinstry | numerous: Down-Armagh etc. Ir. Mac an Aistrigh, aistreach, a traveller. Seemingly of Scottish origin and associated with Galloway. SI & SS. |
Parishes where McKinstry and a second surname are both baptised.