From the 1870 WI Census,
Richland County, Post Office: Ithaca, dated 20 Jul 1870:
Walport,
Abram, 56, laborer, value of real estate: $1,500, value of personal estate: $300, birthlace:
Prussia, parents were foreign-born, U.S. citizen
Walport, Christina, 48, keeping house, birthplace:
Prussia, parents were foreign-born
Walport, Joseph, 23, works on farm, birthplace:
Prussia, parents were foreign-born, U.S. citizen