Interested in McCusker, Pryor and Groark families from Tyrone and Mayo

I will be visiting Ireland in May 2023 and would like to visit the birthplace of several grandparents and make connections with relations if possible.

My grandfather, Patrick McCusker was born around 1880 most likely in Cullenreamer, Tyrone.  He emigrated to the US. His father Bernard McCusker was born around 1840 in Cullenreamer, Tyrone and died there in 1878.  His wife, Bridget Hackett, was also born died in Cullenreamer.  She lived from 1840 to 1911.  She died in Armagh.

My maternal grandmother, Rose Ann Pryor, was born in 1888 in Northern Ireland, but I am not sure where.  She and my grandfather may (according to Ancestry.com) have married in 1912 in Kileeshil Parish in the diocese of Armagh. She also emigrated to the US.

Although I realize this is a Tyrone message board, I would also like to mention my paternal grandmother, Mary Ellen Branson (maiden name Groark) who was born on16 Nov 1889 Swinford, County Mayo.  Her father's name was Thomas Groark, born in 1865.  Her mother was Mary Ellen Sheridan.  She was born in Bohola, Mayo.

Any information about those above, including any living descendants would be appreciated.  Thanks.