My Grandfather was William Morgan McSweeney who was the son of William McSweeney born Knocknagree in Ireland. His oldest brother, Pat emigrated to the US through Boston, two sisters also went to the US . Bill came to NZ in 1878 on the Blair Gorie. I do not know if my grandfather is related to the Morgan McSweeney that you seek. However we could never find out where the Morgan came from. I went to Knocknagree a couple of years ago. A very little village with about 3 pubs. Good luck with your research, Ann Jarman nee McSweeney.