Mary Ellen dtr of Archibald FAIRBAIRN and Eliza O'HARA
Masham, Quebec, Canada
NB her age and birth dates vary somewhat over assorted records. At least two agree 28 April but vary in the year, 1852 or 1859. (7 in 1861, 11 in 1871, 24 in 1881, 25 when married in 1883, 41 b. 28 Apr 1859 in 1901)
20 Feb 1883
Rochesterville, Nepean, Carleton Co., Ontario
cert. shows Mary Ellen 25 as born Masham, d/o Archibald FAIRBAIRN & Eliza O'HARA, resid Masham, Daniel was 26, born Masham, resid Masham Co of Ottawa Pro of Quebec, farmer s/o Daniel McDONALD and Mary GUNNERS?; Wit Charles LEDWOOD and Isbabella LAMBERT, both Rochesterville, Nepean 
Masham, Ottawa Co., Quebec, Canada
FAIRBAIRN: Archibald 45 farmer proprieter b SCT; Elizabeth (O'HARA) 40 b Ireland; Assumed children: Jane 21, Archibald 19, Isabella 18, John 14, Elizabeth 12, William 10, Mary 7, George 5, Martha 3, Diana 1 all b L.C. All F.C.
A separate schedule has Archibald as trader, protestant, marr. b SCT 45, followed by Michl BRITT labourer, R Cath. b Ireland, then Elizabeth Fairbairn, child b. Lower Canada Prot. 13; James O'Hara boy b Lower Canada 12 
Maniwaki, Wright Co., Quebec, Canada
McDONALD: Daniel chef (head) 43 b 18 Oct 1853, Scotch, Canadian Presb occ ?; espouse Mary 41 b 28 Avril 1859 b Q; Fils: William 12 b 2 Oct 1888 b Q; Serv Jane McINTYRE 21 (Irish) 
↑ Source #S3445: Marr. 20 Feb 1883 Daniel s/o Daniel McDONALD & Mary GUNNESS; Mary Ellen d/o Archibald FAIRBAIRN & Eliza O'HARA, Rochesterville, Nepean, Carleton Co., Ontario
↑ Source #S400: 1861 Masham, Ottawa, Quebec; Roll: C-1304, hsehold of Archibald FAIRBAIRN & Elizabeth O'HARA, extracted Sep 2009
↑ Source #S400: Maniwaki, Wright County, QUE Dist 200 Sub Dist P-1 Family 145 Pg 18, hsehold of Daniel & Mary McDONALD, extracted Mar 2008
Source S400: Canadian Census images via Ancestry
Source S3445: Ontario Marriages, images via Ancestry
It may be possible to confirm family relationships with Mary by comparing test results with other carriers of her ancestors' mitochondrial DNA.
However, there are no known mtDNA test-takers in her direct maternal line.
It is likely that these autosomal DNA test-takers will share DNA with Mary: