The following data is extracted from Genealogy and Biography of Ontario County, New York.
Zadock Granger, the great-great-grandfather of Henry Francis Granger, was born in Suffield county, Connecticut; enlisted in a Massachusetts regiment, and served as a colonel during the revolutionary war. Later he removed to Halford's Landing, the present site of Rochester, New York. His younger brother was killed at the battle of Bunker Hill.
Source: Genealogy and Biography of Ontario County, New York