There is a Burchtorff mentioned in the Seebass genealogy. Specifically:
Cleve, Johann Gabriel, 1673 Kornschreiber, 1679 Amtsverwalter in Bevern, 1683 Amtsverwalter, 1687 Amtsmann, 1706 Oberamtmann in Lutter,
born in Bevern 1 May 1653, died in Lutter 17 November 1716, married in Goslar 20 April 1686 to
Burchtorff, Maria Helene, b ?, died after 1732
If you have a connection, mail you the rest of the Seebass genealogy, as well as the Wackerhagen genealogy in which both are also mentioned.
Guenter in Michigan