My 2x great grandfather was Hugh (Brien) O'Brien born abt 1833 to Patrick O'Brien and Mary Coyle. hugh married a Mary Connolly. His brother James was born abt 1835 in Aghnamullen, Monaghan, Ireland.
Hugh lived in both Cootehill Co Cavan and Aghnamullen, Co Monaghan. I believe that the are relatively cost as the boundary lines changes a few times. The most concrete date that I have was for a daughter born in Oct 1867 in Cootehill (Rose O'Brien). Rose eventually married a Peter Clerkin.
The family has been know to travel between Cavan and Co Monaghan. In 1901 they lived in Cormeen, Monaghan, Ireland.
I'm looking for any info on the family and any other looking for the family.