Are you familiar with the Canadian 1881 census on the LDS website: http://www.familysearch.org
John ROBERTSON Married Male Scottish 38 born Ontario C. Presbyterian
Rebaca ROBERTSON Married Female English 30 born Ontario C. Presbyterian
James ROBERTSON Male Scottish 9 born Ontario C. Presbyterian
Mark ROBERTSON Male Scottish 7 born Ontario C. Presbyterian
John N. ROBERTSON Male Scottish 5 born Ontario C. Presbyterian
Thos Levi ROBERTSON Male Scottish 3 born Ontario C. Presbyterian
Mary Ann ROBERTSON Female Scottish 1 born Ontario C. Presbyterian
Census Place Dummer, Peterborough East, Ontario
Family History Library Film 1375877
NA Film Number C-13241
Page Number 17
Household Number 84
You can lookup some Ontario marriages at: http://homepages.rootsweb.com/~maryc/ontmarr.htm
#013447-00 (Peterborough Co): John N. ROBERTSON, 24, farmer, Dummer twp., Ashburnham, s/o John ROBERTSON & Rebecca PAYNE, married Margaret A. HILL, 20, Harvey twp., Burleigh twp., d/o Thomas HILL & Eliza DARKINS, witn: Levi & Rachel PAYNE of Ashburnham, 29 Oct 1900 at Ashburnham.
013626-00 (Peterborough Co) Thomas M. VALOIS, 28, labourer, Douro, Ashburnham, widower, s/o Joseph VALOIS & Mary A. MCWILLIAMS married Mary Ann ROBERTSON, 21, Dummer, Ashburnham d/o John ROBERTSON & Rebecca PANE, witn: W.W. WAGG & Annie CROSSLEY, both of Peterborough, 9 Aug 1900 at Peterborough.
14245-01 (Peterborough Co): Mark Washington ROBERTSON, 27, brick maker, Dummer twp., Ashburnham, s/o John ROBERTSON & Rebecca PAYNE, married Louisa SIMMONS, 29, London England, Peterborough, d/o Charles SIMMONS & Mary CHILTON, witn: James ROBERTSON of Ashburnham & Elizabeth SIMMONS of Peterborough, 14 Aug 1901 at Peterborough.
14228-01 (Peterborough Co): Thomas Levi ROBERTSON, 23, laborer, Dummer twp., Ashburnham, s/o John ROBERTSON & Rebecca PAYNE, married Bertha DUNFORD, 21, Dummer twp., Burleigh twp., d/o Joseph DUNFORD & Rachel TIGHE, witn: Burton LEE of Otonabee twp & Ida L. HEASMAN of Peterborough, 3 April 1901 at Peterborough.
You can contact the folks running this website to obtain marriages certificates for marriages not found on this website, for a small fee.
There are lots of PAYNE marriages on this website in Dummer Twp of folks from England.
You can look for some Ontario births at: http://freepages.genealogy.rootsweb.com/~births/index.htm
Always check other spellings, and look for the mothers maiden name in the record.
017456-74 (Peterboro Co) ROBINSON, Mark, m, b. Jan. 27, 1874, father â€“ John ROBINSON, farmer, mother â€“ Rebecca PAYNE, infm â€“ Thomas Ritchie, neighbor, Dummer Tp.
Some Ontario death records are at: http://www.rootsweb.com/~onvsr/deaths.htm
You can access the 1901 Canadian census, with index, at: http://automatedgenealogy.com/census/index.html
48 150 Robertson John, Male Head Married Mar 12 1840, age 60
49 150 Robertson Rebecca, Female Wife Married Jul 10 1846, age 54
50 150 Robertson Mina, Female Daughter Single Sep 12 1878, age 22
You can lookup the cemetery info on: http://www.islandnet.com/ocfa/
Looks like your people are in McCracken's Cemetery.