Dear Mary Ellen Martin; It is possible but I suspect distantly however I do know that John Donegan of NY area and his brother came to this country in 1864 and if John's middle name was Christopher then YES abslolutely we would be related.
Not sure just how distantly but most assuredly we would be even if its thru the other brother of John's.Most of the Donegan's that were in existance at that time had nearly been wiped out by the potatoe famine war in Ireland at that period of time.During that war there was over 10,000 Donegans Killed during that period of history.
So Mary we just might be related My mother down in Southern California and while my father was alive did a great deal of geneology and had a lot of the family history placed into archive at Salt Lake City with the Mormon church there.My mothers maiden name is Richens.My Fathers name was DaWayne Buck Donegan and his father was Marsh Donegan deceased now by some 14 years now.
However to answer your question there I suspect that we may be related and like I said not sure just by how much distance we may be.
Lucky W DoneganM.S. C.I.S. Computer Systems Engineer