The following data is extracted from Genealogy and Biography of Ontario County, New York.
Sylvanus Burtis, second son of Arthur ( i ) and Elizabeth (Palmer) Burtis, was a boy of fourteen when his father died. He attended school at Cherry Valley. After his return home he managed the farm. He was an ideal country gentleman. He married Elizabeth Post, whose family is well known in Ontario county, living north of Oaks Corners. They had one son. Sylvanus Jr., with whom the father lives in California, being ninety-two years old.
Source: Genealogy and Biography of Ontario County, New York