Il est marié avec Mariah Montaney.
Ils se sont mariés apres 1860.
Not sure of this identification at all. Mariah and her Doty husband supposedly ended up in Jefferson County, Wisconsin, by 1874. Jacob and Mariah Doty were in Jefferson County for the 1870 census and Mariah is roughly the right age, born in New York. But husband was supposedly Vern or Sylvester, not Jacob? And the sons' names are William and Jerome, not Fenton and Lewis.
In 1880 there is a Silvanus Doty, age 38 with wife Mary, age 40, both born New York, with sons Fenton age 12 and Louis age 5, all living on Germany Street, Saginaw, Saginaw County, Michigan. The names are right, but their ages don't sem right and the location isn't right.