A More Precise Irish Hometown?

I found a website detailing the history of a school in Meentinadea, County Donegal, Ireland.

I was directed to the page by searching for a priest in the family, Father Charles O'Donnell (1884-1934).

The site mentions that Father O'Donnell's father (Cornelius or Neil O'Donnell) was from Altnagapple, "two miles from the school," and his mother, Mary (Gallagher), was from Cullion, Killybegs.  Father O'Donnell "visited his ancestral home at Altnagapple" on a return trip from Rome in 1923, saying Mass while an uncle, Charlie Mhici O'Donnell, "and relatives were present."

This information expounds upon the little information I previously had, which was from Father O'Donnell's book.  In a poem in the book, Father O'Donnell wrote that his father was from Ardara and his mother from Killybegs.  They met on the road in Donegal.

Father O'Donnell's father, Neil O'Donnell, was a brother of my great great grandfather, Patrick Francis O'Donnell.  Neil and Patrick's parents were Peter O'Donnell and Margaret Gallagher.  I am hoping that Margaret Gallagher was also from this area of Donegal and is related to the Mary Gallagher who married her son Neil O'Donnell.  That should make finding records easier.

I did not know that Neil and Patrick had a brother, Charlie, who remained in Ireland.

Hopefully this additional information will enable me to locate some more generations in Ireland.