Here is the 1871 census information from the Archives: It adds the three sisters which were not on the 1881 census because by then they had married. For Turnbull: Anne Turnbull, age 23, born England (abt 1848). The other siblings are Jane, (b 12 Jan 1851 England, d 7 Sep 1918 Toronto, Ont) Elizabeth, (b abt 1853 England, d prior to 1938 Ont, Canada) Robert (b 30 May 1958 twp Markham, Ont, Canada - d 24 Nov 1938 Orillia, Ont), Andrew, (b abt 1861/1862 twpMarkham, Ont, Canada - d unknown) Harriet, (b 31 Aug 1863 area of Ardtrea, Ont, Canada, d 28 Jun 1876 same area) and they are the children of John Turnbull and Anne Mary/Mary Ann Kemp, both of which were born in England. John also had an older brother Andrew, who apparently emigrated to Canada about the same time as John's family.
Anne married a John McKewan (?) , I don't know why or how but they lived in Winnipeg, they had 4 girls Susan, Lilly, Anne and Nellie. Susan and Lilly married brothers by the name of Gooderham. Lilly had one son, Walter after his father. I don't think Susan had any family. Anne died in her thirties. Nellie married a man by the name of Kirby, I think she was in the 30's when she married, she was only married a couple of years when she died very suddenly. No children and I don't know what she died of. The Gooderham men were both Railway men. The father was drowned in the Red River/Assiniboine River. I know he was drowned, but I'm not sure about the river. (At the bottom of the page she has written in ink, The feller who drowned was Aunt Annie's husband).
This information comes from a letter written by Ann Turnbull's neice, Mabel Amelia Turnbull Dilworth, youngest offspring of Ann's younger brother Robert Turnbull.