John Miller was a son of Peter Miller (Peter was born in Germany). The only thing I know of John Miller is from a family note that stated John Miller was born, raised and died in Paint Township. The note also stated his son John died in Paint Township.
John Miller's brother, David P. Miller, was born 1809 and lived in Paint Township until 1866 when he moved to Croyle Township, Cambria County. Therefore, I imagine, John was born close to the 1809 date.
They had a sister, Rebecca, who married (unknown first name) Roudebush (sp?).