"Second Son of John L. [Sill] of Watervliet, was born 7th November, 1810, married Edwardanna [Schieffelin] of New York city in 1830. [...] Francis N. Sill was a physician and resided at Staten Island for some years. He died in that place on the 4th of May, 1848, in the 38th year of his age. His remains were brought to Bethlehem for interment.
"Doctor Sill's widow married for her second husband Doctor John Noyes (1815-1854) of Lyme, and for her third Captain [John] Mather Chadwick (1799-1877) of Lyme."
Sill, George G. Genealogy of the Descendants of John Sill, who Settled in Cambridge, Mass in 1637. Albany, Munsell & Rowland, 1859. 27.