ballymacnab on Family Tree Circles

hello there
Have been researching for the above names and am quite happy to exchange any useful genealogy information within the framework of these names. my gt gt grandparents were a hugh coyle and rose anne coyle m/s friel who came from Donegal.They had a daughter by the name of Marjory coyle .Marjory left roughpark in Donegal in 1849 as an infant and moved to Glasgow. In 1866 she married a Patrick flannagan who came from Armagh at st Andrews cathedral gt clyde st Glasgow .Patricks parents were a Thomas flannagan and a Catherine vallely who both came from Armagh. one of Marjory and patricks children were Catherine who married my gt grandfather William Connelly.As with most cases in family research one hits a brick wall and i am no different.Any exchange on this would be wonderful as I know our roots also spread to the usa my family are related to the mc entees of Massachusetts john mc entee was born November 10th 1927 milford n,h. and died on the 4th july 1993 In nashua n.h. he was the son of bridget flannagan who is my direct ancestor.