Looking for Orgin of Vogt Family IN Prussa

I'm from Wisconsin. My mother Doris (Vogt) August 10, 1937, her dad Leroy Vogt-1915, his father John vogt-1878-1958. married laura atchey. John Vogt Dec. 25, 1842,born in Germany. His dad was Adam Philip Vogt 1824- Germany wife Mary Agar from same place Immigrated to New york in 1858. Died in Elpaso, Wooford, Ill I'm looking for philip and marys roots!