Church records began in Gerbitz, Germany, in 1788. The death certificate for Martin Blankenstein in 1838 show he was born and died in Gerbitz. His father was Georg Blankenstein, who was a Hufschmied (black smith) in Gerbitz. JOHANN GEORGE BLANKENSTEIN was married to DORTHEA ELISABETH SCHULTZ.
Reference: Son's German death certificate from Gerbitz, Germany
Family history by Dr. Felix Blankenstein:
JOHANN GEORGE BLANKENSTEIN I "was the second child of the brewery master and later farmer Hans Blanckenstein. In 1726 he moved to Gerbitz, Germany, with his parents. It was there that he learned forging, probably with his future father-in-law Hans Christoph Schultze. After accomplishing his journeyman and apprentice time he settled in his hometown as a blacksmith specializing in horses and weapons. On 28.5.1741 hardly 23 years of age, he married the blacksmith master's daughter DORTHEA ELIZABETH SCHULTZ. Her family came from the Bernburg, Germany area. They had 8 children:
"JOHANN GEORGE I BLANKENSTEIN died on 17 February 1773 of fever. His one-year younger widow lived 14 years longer. The forgery in Gerbitz was destroyed in 1932."