Vondra & Ruhland Surnames

My GG Grandparents Lorenz (Lawrence) Anna Margaretha (Ruhland) Vondra migrated to this country in 1858.Lorenz was born 14 April 1825 in Strubtkries Muhlhausen, and he died 7 Jan. 1897 in Kieler, Grant Co. Wisconsin.Anna was born 6 Aug. 1835 probably in Becirk Erfort, and she died 22 May 1908 in Kieler, Grant Co., Wisconsin.they married in about 1855.Does anyone have information as to whom their parents were?