I'm sorry that I have no information on Patrick Barrington or Mary Stack. I have, however, seen them referenced as belonging to family trees listed on ancestry.com, so there must be some information out there.

The Barrington's of Limerick (and Co. Clare) seemed to arrive about 1690 in the person of Samuel Barrington who was possibly born in Dublin abt 1649. The Barrington's (some were knighted and some were Barons) were very prominent in Limerick. I would assume that your Patrick is probably related.

If you email me at rosenorm1@gmail.com, I will send you further info and some web sites on Barrington history, both Irish and English.

Norm Wakefield