My mother's father's mother was Augusta (in Prussia Ernestina Augustina Albertina) Dieck, born 25 Feb, 1858 in Selchow, kreis Grifenhagen, Pommern, Prussia. Deek is the correct Germanic pronounciation, but in the 1880 census, Town of Grant, Shawano County, Wisconsin, they are recorded as Dick. And in some of the marriage records family members are recorded as DICK.. I was told this was an attempt to Americanize themselves. But the family who remained in Shawano County and who married other Prussians went back to saying DEEK while the ones who settled in Suring, Oconto County, Wisconsin said Dick.