Looking for Sauberlich IN Germany

looking for parents of Ernest Sauberlich, born August 1834 in Germany, immigrated to US in 1860, married to Anna ? in 1880, died 22 Aug 1908, buried in Philadelphia PA. But who and where are his parents? Apparently, the father (not sure about mom) came to US with his son, as his name shows up in Philadelphia in the 1890 census.