I'm new to the Forum but I noticed that many of you are not aware of the distinction between the English and Irish GLEASONs and are thus wasting your time on the wrong line.
The English GLEASONs ALL descended from Thomas LEESON, a Puritan (protestant) who landed in Watertown, MA in the mid 1600's. Years later he and his family for the most part changed their name to GLEASON.
The Irish GLEASONs usually spelled GLEESON in Ireland, but also often changed to GLEASON, came to this country much later. Most but not all immigrated in the 1840's due to the potato famine in Ireland.Most, I believe, are/were Irish Catholic.
Obviously the two lines are very unrelated so it is important for any 'newbie' to first determine his 'surname nationality' before searching for his ancestors.
I noticed several mentions of John Barber White's book [Genealogy of the Descendants of Thomas Gleason, 1909].All 5,000+ GLEASONs in that book are English GLEASONs and should be of no interest to an Irish GLEASON.