Cause of her death was Terminal Illness.
Ellen married William WILLSON, son of Unknown WILLSON and Unknown, on 11 Oct 1868 in Tillsonburg, Ontario, Canada.1 (William WILLSON was born in Mar 1822 in New York and died on 14 May 1901 in Meridian Twsp, Ingham County, Michigan.) The cause of his death was Gastritis.
Ontario Marriage Index, 1858-1899 (Oxford County, Ontario, Canada). Surety: 4. Name: William Wilson
Birth Place: Unites States
Estimated Birth Year: 1826
Spouse Name: Ellen Gilmore
Spouse's Age: 24
Spouse Birth Place: Ontario
Spouse Residence: Norwich Township
Spouse Estimated Birth Year: 1844
Marriage Date: 11 Oct 1868
Marriage County: Oxford
Family History Library Microfilm: 1030062
2 1871 Canadian Census (District 13, Division 1, Durham Twsp, Oxford County, Ontario, Canada). Repository: Ancestry. Surety: 4. Lists William Willson (butcher), second wife Ellen, and children Eli and Roscoe, living in Durham, Ontario. William indicates his religion is New Connexion Methodist, and the origin of his family is Scotch.
3 Death at the Gaol (Woodstock, Oxford County, Ontario, Canada), Pg. 4, Col. 2. Surety: 4. Ellen Wilson, wife of Wm. Wilson of Tillsonburg, died at the gaol on Saturday afternoon while serving a sentence of six months for vagrancy. When admitted two months ago she was in a dying condition. An inquest was held on Saturday night by Dr. McLay and the jury brought in a verdict of death from natural causes.
4 1881 Canadian Census (Tillsonburg, Oxford County, Ontario, Canada). Repository: Latter Day Saints Family Search. Surety: 4. Lists William Willson and his wife, Ellen, living in Tillsonburg. Son, Roscoe, married the same year, so no children are in the household.