Town of Springfield, Otsego County, New York, in 1850 Federal Census Page 158; Line 4 Dwelling 352; Family 370; Benjamin Jackson.
Benjamin Thayer, Age 55; Male: Laborer. Place of Birth: New York. Eve Thayer, Age 55; Female; Born in New York. Female Thayer, Age 14; Female; Attending School; Born in New York. Cornelia Thayer, Age 9,Female; Attending School; Born in New York. Nancy Stocking, Age 71, Female; Born in Connecticut.
Benjamin is list as one of the five sons of William Thayer who arrived with him to Otsego County prior to 1819. This according to "Biographical Review of Otsego County" page 309.