I think we may be double cousins. I noticed your posts regarding children of Daniel Cassidy and Susan Langan. They were my great, great great grandparents. Their daughter, Annie, married Joe Doherty, son of James and Mary Martin Doherty, of Drumrooskie, Donegal Town. Joe was a brother of Isabella Boyle and Susannah.
I have been doing extensive research on the Joe Doherty line and have a fairly complete PDF file of the Doherty/Cassidy/Langan family -- including Isabella's siblings James and John (both who immigrated to New Mexico).
Can you tell me how you are related? Do you have a tree for Isabella or Susannah? I have lost contact with all Irish cousins except a grandaughter of Lizzy (nee Doherty) Diver.
P.S. I am heading to the family ranch this week where my grandfather has just uncovered the marriage certificates for Annie and Joe.