As a follow up to why someone asks, when something appears to be similiar in Surnames.
1901 St.Amand South Gower Township Div. 2 Pg.2 Nos. 75
1891 St.Amand South Gower Township Div. 1 pg. 21 Nos. 100
1881 Santamow South Gower Township Div. 1 pg. 5 Nos. 23
1881 Santamo Oxford-on-Rideau Township Div. 3 pg. 28 Nos. 130
1871 Santamaw Oxford-on-Rideau Township Div. 1 Pg.20 Nos. 68
1871 Santaman Oxford-on-Rideau Township Div. 1 pg. 62 Nos. 214
1861 Sentiman Oxford-on-Rideau Township Div. 1 pg. 9 Nos. 48
All of this various spellings of names are from Census searches for Ontario, which include photo copies from Microfilm of the Census documents.
In many cases names were misspelled or simply spelled as they sounded.
Again, we as researchers like to explore options and all possibilities. Thanks