According to New York State, "New York began statewide registration of births, marriages, and deaths ("vital records") in 1880-81, under supervision of the State and local boards of health. Compliance with the law was incomplete until 1913 or even later; therefore certificates are lacking for many events.
Several of the State's larger cities recorded vital events for varying periods of time prior to 1880; see below for more information."
a Lewis Savage is listed as living in Vermont on 1880 census..
Savage-5959
https://www.ancestry.com/sharing/9859279?mark=7b22746f6b656e223a227344623832543730694e55456370396138435777667048346655555749654a3479315834446264542f75673d222c22746f6b656e5f76657273696f6e223a225632227d 1880
You might check in Vermont for death Certificate.
