Searching for the parents & siblings of Wilhelm Frederick GRABAU. He immigrated to the US circa 1872/1876. His wife's name was Anna L. URBAHN. He was born 9 Nov 1846 in Nakel, Posen, Prussia. Died 2 May 1903 in Wausau, Marathon Co, WI. His children were Frederick Wilhelm (1872-1939); Emil Frederick (1876-1933); Karl John (1879-1973); Ida Caroline (1880-1916); Edward H. (1883-1940); John August (1885-1958); Helene E. (1890-1987); and Hedwig "Hattie" Wilhelmine Sophia (1896-1988).