Accompanied by their daughter's husband, Albert Kempker, the Conrad Rehmann family departed from Bremen, Germany and arrived in Philadelphia, Pennsylvania on Friday, May 16, 1851. They were aboard the S.S. Louise Marie (often misspelled as Louisa Marie) which was commonly used by German immigrants to the United States at that time. The captain on this journey was C. Wenke.

S.S. most often refers to a Steamship. Occasionally, it was attached to a Ship Under Sail.