My ggf Friedrich Wilhelm Siepmann was born in 4 Jan 1860 in Oberhausen, Nordrhein-Westfalen. His father Wilhelm was born in Oberhausen, circa 1810-1835. The modern city of Oberhausen was not incorporated until 1862.
Wilhelm married Catherina Lang in Temmels, Rheinland-Pfalz in June 1855. Their first child Catherine was born 9 June 1856 in Temmels. They returned to the Oberhausen area where all the remaining children were born.
Wilhelm was a miner, according to my father.