Peter Gross, the eldest son of Paul, was born Jan. I, 1761, in Whitehall Township. He served as a sergeant in 1781-2, in the Revolutionary War, under Capt. George Trein, in the first battalion of Northampton County Militia. He was commissioned a justice of the peace March 20, 1812, and held the office for 29 years. He died May 28, 1846, aged 88 years, and was buried in the Jordan Reformed churchyard.

Peter Gross married Barbara Troxell, daughter of Peter and Anna Maria Troxell, born Dec. 1, 1762, died June 4, 1834.