To Ralph L. Aldrich I am working on my family tree and found your note about Friedrich Christoph Dahlman, born 13 May 1785 at that time Swedish town of Wismar (Mecklenburg). He was the 6th child of Johann Ehrenfried Jacob Dahlmann, Bürgermeister of Wismar (b.14 Dec 1739 at Stralsund and d.15 Aug 1805 at Wismar) and his first wife Lucie Auguste Frederica Jensen (24 Mar 1756 - 22 Jul 1788). F. Ch. Dahlmann married 29 Apr 1817 Philippine Juliane Hegewisch. She died 17 Dec 1826. He married than Luise von Horn 3 Apr 1829. Unfortunately I have no more details about the descendants coming into your family.