In the Federal Census of 1860, Seneca and Mary F. Remington, ages 24 and 18, are living in Lansingburgh, Rensselaer Co., NY. Seneca is a power (?) brush maker.
In the Federal Census of 1870, the family is still at Lansingburgh: Seneca 34 NY, Mary 28 NY, Albert 6 NY, and Chas 4 NY. Seneca is a brush maker and Mary is a dress maker.
In the Federal Census of 1880, "Senica" & Frances Remington, ages 44 & 38, are living on Summer Street in Somerville, Middlesex Co., MA. Children in the household are: Albert 16 and Charles 14. Seneca is still a brush maker; Frances is a dress maker. Perhaps her name is Mary Frances.
I found Seneca's middle initial in Albert's death record.
Seneca died at age 54 y 3 m 1 d. Cause of death -- phthisis, a type of tuberculosis. His death record identifies his parents as Norman (b Lansingburgh) and Emma E. (b Saratoga).