John was born on 22 July 1870 in Stockton Twp., Camden Co., New Jersey to Frederick and Maria Grossmick. The 1880 census still lists their residence in Stockton. Gopsill's Philadelphia City Directory showed John and his brother Henry running a wine business in Philadelphia. They reportedly ran a bar on John or Johnson St. in Philadelphia, PA. On 27 Sept 1893 John married Stella M Van Doren in Camden, NJ. In 1900 they lived on Main St. in Cramer Hill, Camden City, Camden Co., NJ. At this time John was a day laborer. They had several children by this time, Lester, Clara, and Florence. In 1910 he was an oil wagon driver for the Electric Light Oil Co. and they lived at 924 N. 26th St., in Camden. There had been a fire at the oil company on 1 May 1901. John was seriously burned about the head, face and hands and was taken to Cooper Hospital when he tried to stop the progress of the fire. They had moved to 1032 N. 25th St. by 1930. At this time he was a laborer in the ship yard. John died on 15 Mar 1926 in Cooper Hospital, Camden. He was buried in New Camden Cemetery.