Genealogical entry for Mary Van Cott on FamilySearch includes her 1868 marriage to Brigham Young.
"Mary Van Cott," FamilySearch, accessed July 26, 2023
Brief Life History of Mary
When Mary Van Cott was born on 2 February 1844, in Canaan, Columbia, New York, United States, her father, John Van Cott, was 29 and her mother, Lucy Lavinia Sackett, was 28. She married James Thornton Cobb on 18 October 1859, in Salt Lake, Utah, United States. They were the parents of at least 1 daughter. She died on 5 January 1884, in Salt Lake City, Salt Lake, Utah, United States, at the age of 39, and was buried in Mormon Pioneer Memorial, Salt Lake City, Salt Lake, Utah, United States.
Marriage [to Brigham Young]
8 June 1868
Salt Lake City, Salt Lake, Utah, United States