Because of a conversation with my mother and my uncle I am more confused than ever. My mother said that our McNair family is from Ireland and my uncle says Scotland. If we are from Ireland our family probably came from Ulster and Connacht. Mostly the Antrum area. There is a Robert McNair that died in Ballyshannon in 1741. Name variant's were Mc Nerrin, McAnair, Mc Anern to name a few. The name used in 2014 in SW Donegal is McNern. Name variant's in Dublin, Ireland will be MacNair, McNaier, McNair, McNaire.
As I find Scottish info I will add it here.
Weir???