So much of the detail of genealogical information requires a knowledge of local history/local geography, which I, for one, do now always have.
Thomas Dunn (c.1824 – 1886) was the son of Owen Dunn and Ann Rock/Rocke, and a brother to my 2x-great-grandmother Bridget Dunn (married John McGlade). He was born in Co. Armagh, Ireland (Canadian records suggest anywhere from 1817 to 1828 as a possible birth year); and can be found in Canada by 1851.
He was twice married.
His first wife was an Anne Ward (parents as yet unknown), who was born in Ireland about 1828. With Anne Ward, Thomas Dunn was father to four known children: Bridget; Mary; Owen (sometimes recorded as John); and James Dunn. These four children all baptized at St. Edward’s RC parish, Westport, Co. Leeds, Ontario, and identified as natives of North Crosby, Co. Leeds.
In the 1861 Canadian census, Thomas Dunn, age 44, now widowed, can be found in Burgess, Lanark Co., Ontario, with children Mary, John [Owen], and James.
On 8 July 1861, Thomas Dunn, son of Owen Dunn and Ann Rock, married Anne Murphy, daughter of James Murphy and Mary (McParland? McPartland?) (St. John the Baptist RC Church, Perth, Lanark Co., Ontario). They had one known child, Thomas Dunn, born about 1862 (who may have died of an “excess of mania” at the asylum at Brockville some forty-three years later, but this still tentative: still developing…).
Thomas Dunn, “aged 68,” died 30 December 1886 at North Burgess, Lanark Co., Ontario. Cause of death: “Frozen – 12 hours.” Well: yikes! Frozen how? frozen why? He was buried 1 January 1887, and his burial record (St. John the Baptist RC Church, Perth, Lanark Co., Ontario) lists his place of burial as “the Catholic cemetery at Burgess.”
Was he buried at St. Bridget’s RC Cemetery at Stanleyville?
I suggest you go to the Lanark Co. Genweb site and request a lookup from Keith. He has an extensive database of burials, including St. Bridget’s.