John Dieter Bauman, eldest son of Henry and Cathanne, was born about 1772. He was reared upon the farm and became a farmer and lumberman, while, like his father and grandfather, he spent much time in hunting and trapping. In 1796 he settled where Bowmanstown now stands, where he built a log dwelling. He also owned and operated a gristmill on the west bank of the Lehigh below the chain bridge, the waterpower for which was cut off by the building of the canal.

In 1808 he built a large and substantial stone house and, obtaining a license, conducted it as a hotel until his decease. This hotel was on the line of the old turnpike leading from Berwick to Easton, and it was a stopping place for travelers on that highway. He was a commissioner of Carbon County for three years and an active, enterprising, and leading man of his county. He was interested in giving his children a liberal education and all were sent to institutions of higher education. He died in 1853. He married, on May 17, 1796, Margaret Newhard, born 9/2/1779, the daughter of Peter Newhard and his second wife, Catharine Miller. They had twelve children, all of whom married and attained mature years: Kate, who married Jonas Peter, of Heidelberg; Jacob; John; Susanna, who married Jonas Andreas, of East Penn township; Jonas; David; Sarah, who married Daniel Keiper, of Allentown; Peter; Henry; Rebecca; Denis, and Josiah.