"I believe she was born in New Brunswick around 1805. Thomas Dwyer (a laborer) married Mary Kelly (a spinster) on 22 Jul 1827 at Newcastle, Northumberland Co., NB by a Catholic Missionary. This info from LDS microfilm #1,429,646 "Marriages of Charlotte & Northumberland Co., NB 1806-1837" This Thomas may have been her brother." -- Ted Brassard
The original form of the name in the Irish language, and still widely used today, is O'Duibhir (pronounced O Dweer), meaning descendant of Duibhir, an ancestor who, by tradition, lived sometime around the tenth century.
The precise meaning of this ancestor's name remains obscure - 'black skirt' has been suggested, but the common modern consensus is 'black and dun-coloured', probably referring to a mixture of hair colouring on the head and face as a personal characteristic.
DWYER: Thomas Dwyer, b. - , d. c1812: was a Sergeant in Queens Rangers: came to NB in 1783 as a Loyalist: settled in Douglastown, Newcastle Parish, Northumberland County: married 1794 in Newcastle Parish, Mary Yeoman.
Sources: MC80/359 W.D. Hamilton’s Old North Esk: Revised, page 130: see MC216 Kathleen Willis Williston fonds, MS 1B5 Biographies and notes on early settlers written by Mrs. Williston in 1947, 2 pages: see entry for Thomas Dwyer.