Career
The family emigrated to the United States in 1856, and settled in Newark, New Jersey. In 1868, Wagner removed to Brooklyn and became a carpenter. In 1875, he opened his own business as a carpenter, builder and contractor.
Later he became a general contractor and executed public works of large proportions in Brooklyn.
He was Messenger to the Board of Aldermen of Brooklyn from 1881 to 1883. And Superintendent of the Truant Home from 1883 to 1884.