Thank you for your assistance on the Dunleavy question. I must assume that whoever made this entry in "Pioneer & Patriot Families of Bradford County PA," by Clement Heverly, 1913, p. 415 was mistaken.
I have found various spellings such as Dunlevy, Donlevy, Dunlavey and Dunlevey. There is also "A genealogical history of the Dunlevy family By Gwendolyn Kelley Hack, full-text at
http://books.google.com/books?id=mTZKAAAAMAAJ&pgPossibly they meant Dunlewy, County Donegal, or Dunlavan, County Wicklow, or Dunleary, county Dublin, but that doesn't fit the known facts below. Dunlevy means "Lughach's fort" per Placenames in Ireland at
http://www.n-ireland.co.uk/genealogy/placenames/placenamesd.htmBelow is what the citation says. He was born about 1770.
"John Morrow was a native of Dunleavy, County Monaghan, Ireland, where he tended a grist mill. He married Nancy, daughter of John Gamble and some years after his sons and father-in-law had
immigrated to Bradford county, he and his wife came also. Mr. Morrow was an expert builder of
stone-wall fences and was thus employed by the more thrifty farmers after settling in Wilmot [Bradford County, PA]. His death occurred Oct. 24, 1837, aged 67 years and that of his wife, April 1860, in her 85th year. Both (are) inhumed in (the) Lacey street cemetery [Laceyville, PA]."
It is known that he lived and worked in Slieveroe and Drumalt, both in Kilmore Parish, county Monaghan. I guess the Dunleavy notation will ever remain a mystery.
Thanks again for all your help.