You stated Fenner Township but could it be Fenelon Township
There is a Frances Newman, homechild, age 11, arriving 1908.
http://automatedgenealogy.comhas
1911 census/Ontario/Peterborough West/14 Smith/page 3
Frances Newman, female, servant, b. August 1895, age 16, England, immigrated 1908, labourer on farm, in the household of George Mullen, farmer
1911/Ontario/Victoria - Haliburton/56 Verulan
William Wilson, age 29, single b. Nov 1881, age 29, farmer
his sister Eliza, age 20, is also living with him,
These are the 2 closest in age and area to each other that could be your couple that married in Dec. 1916.
Her age could have been mistranscribed on the home child records as it is out by 3 years but all other info fits.
Verulan in Victoria County is now Kawartha Lakes and is bounded on the west by Fenelon TP and the east by the County of Peterborough.
All vital statistics are by province and each province has there own privacy laws. Therefore, it is really important to try to find an area to search for your couple.
Family search is one site, local libraries are excellent sites as they may have info that isn't on line such as old newspapers, family histories, etc. The 1921 census for Canada is due to be released sometime in 2013 but when and through which site remains unknown. It will also take some time for transcriptions to take place.
If this sounds like it could be your Frances, post that info here and I am sure someone will pick up on this thread and see what they can find. Also if you know her parents, post that as well as it may make it easier to find info.