I found the following marriages at Ancestry:
Selina Stone, 18, born Canada, daughter of Edward and Sarah Stone married John Purvis, 24, born Canada, son of William and Martha Purvis on 18 Jan 1876 in Usborne.
Edward Stone, 21, born Dereham, son of Edward Stone and Sarah Ellery married Ellen Thompson, 19, born Usborne, daughter of James Thompson and Ann Pybus on 18 Nov 1885 in Usborne.
Sarah Jane Stone, 23, born Dereham, daughter of Edward and Sarah Stone married John Campell, 23, born Zorra, son of James and Lydia Campell on 24 Mar 1886 in Dereham.
Usborne is in Huron County while Dereham is in Oxford County.
On the 1881 census in Dereham, there is a 16 year old Edward Stone living in the household of Thomas Ellery and family. Here's a link to the census page at Library and Archives Canada (line 23 of top image):
http://data2.collectionscanada.gc.ca/e/e328/e008198058.jpg Here's an entry from the 1881 census for John and Selina Purvis with their son in Parry Sound & Parry Island, Muskoka (starts line 3 of top image):
http://data2.collectionscanada.gc.ca/e/e328/e008180021.jpgHere's an entry from the 1881 census for a Sarah J. Stone, 18, in the household of William and Anna Stone in Dereham. Her relationship to the family isn't mentioned but I think she is the neice of William and Anna as there is a marriage at Ancestry for a William Stone and Anna Ellery listed (details to follow). Here's a link to the image (William Stone is on the last line of the top image and Sarah J. is on line 10 of the bottom image):
http://data2.collectionscanada.gc.ca/e/e328/e008198059.jpgThere were a number of Ellerys listed on the same page as Sarah's and Edward's entries.
Here are the details for the marriage of Anna Ellery and William Stone:
Anna Ellery, 17, born England, residence Dereham, daughter of William and Esther Ellery married William P. Stone, 22, born England, residence Dereham, son of Edward and Jane Stone on 16 Dec 1859 in Oxford County.
Here's another Ellery marriage:
Thomas Ellery, 30, born England, son of William and Esther Ellery married Emma Cotton, 23, born Woodstock, daughter of Robert and Sarah Cotton on 5 Feb 1872 in West Salford, Oxford County.
Jacquie