Schulenberg from Germany, 1855

Christian John Schulenberg b.1803, Hanover Prov., Germany d. 1876, Independence, Mo., and Wife Maria Donenbarch b. 1807,d.1891, Independence, Mo., departed Germany; Bremen to New Orleans April 26, 1855.Five sons:Fredrich, Christian Jr., Wilhelm, and Ludwig.Ship: Ernestine.Came to St. Louis, Mo. first then to Independence, Mo.

Christian was my gggrandfather>Frederich>Edward John>Edward Francis>Edward Francis Jr. (me)Any information on this family in Germany prior to 1855?