The 1851 census is available free to search here
www.automatedgenealogy.comI don't see the family in 1851 but in 1861 Faith Robinson, 56, b. Ireland, widow is living in Kincardine with son James, 17, b. Ireland. There are a number of Robinson's enumerated directly above her entry.
Jeanette Robinson, farmer 65, b. Ire. widow
Thomas 23. b. Ire
Ann 43 b. Ire
Arch'd , farmer, 35, b. Ire married to Jean 31, b. Ire with children
Ann 6, b. Cda Eliza 5 b. Cda Mary 4 b. Cda and Arch'd 2 b. Cda
On the 1871 census Kincardine Faith Robinson, 63, b. Ire. widow is living with daughter Anne and her family.
Thomas Robinson 30 b. Ire with wife Anne Robinson 28 b. Ire and child Faith 8 b. Ont.
Ann Robinson d/o Robert and Faith married 30 Nov 1862 Bruce County to Thomas Robinson s/o Archibald and Janet Robinson.
You can use the free census at
www.collectionscanada (1881 and 1891) and the 1901 and 1911 available at the first link to track the family.
Online ancestry tree shows Ann's death 24 May 1921.
There is a marriage for James Robinson s/o Robert and Faith 9 Oct 1871 to Jeannie Phewfelt. The same online ancestry tree corrects the name to Jennet Catherine Shewfelt and gives his death as 25 Aug 1917 Algoma. This death record gives parents as Archibald Robinson and Faith Knox.
I didn't find Faith robinson in the 1881 census.
Debbie