I have found several death records but no obituaries to possibly add detail. Will have to see what can be found.
I found a marriage 7 Oct 1874 for an Elizabeth Ross born about 1852/3 according to marriage doc. Parents George and Elizabeth and birth location County of York. Spouse George Martin ( Some sources point to a George Washington Martin) He was a blacksmith born in St. Mary's Ontario parents Elijah Martin and Elizabeth Hunter. I have been told there is a record of his death in Michigan 12 JUL 1937 Detroit, Wayne, Michigan, USA. Have not seen that record. If spouse George passed in Michigan, is that were Elizabeth passed as well?
I have found three children of Elizabeth and George and one Hattie Martin married and was in Michigan by 1900. Daughter Lottie 1879-1897 passed in Lambton county Son George Norman b 15 Sep 1888 Moore Township, Lambton appears with family in 1891 census but then no sign of them in 1901. Possibly everyone in Michigan for work? Guessing there would be demand for blacksmiths in Detroit at turn of the century. From Detroit Historical society about 1900 "Detroit is the world’s largest manufacturer of heating and cooking stoves. Other big industries include ship building, cigars and tobacco, pharmaceuticals, beer, rail cars, and foundry and machine shop products"
The 1851 census looks like there may be names I have not accounted for (or this is a wrong George and Elizabeth)
I had Maria J Ross, birth about 1847, as being born in Lambton but now question that as sister Elizabeth born 1853 was born in York. Now thinking this was bad info from a 1970s family tree.
Given that Ross is not an uncommon name and given names are rather common there could be some errors.