Family #105 in the 1775 Grimm census.
Family #45 in the 1798 Grimm census.
By 1767, Dorothea Rusch was married to Johann Heide, a man 18 years her senior. She was probably the daughter of another immigrant whom he married after the death of his wife. The only child in their family was two week old Anna Dorothea. If Dorothea had a full-term pregnancy, she would have become pregnant in October of 1766, while the immigrants were still in Saint Petersburg. Minimally, her husband's first wife perished in the Russian capital, while his children may have died at any time between 15 September 1766 and August of 1767, when the first census was taken.
1767 Grimm Census 
Johannes told the 1767 census taker he was a handwerker or craftsman from Brandenburg, but he was probably from Neubrandenburg, near Mecklenburg-Vorpommern. Neubrandenburg had a Scandinavian population which would account for his surname being written as von der Heide in the Kulberg Lists, which was not a common surname prefix in those records. Heide coming from Neubrandenburg doesn't square with the information in the Kulberg Reports, which say he was from Darmstadt.  The two locations are more than 400 miles apart, so we are not talking about a suburb or nearby town. That original group of travelers may have stopped in Neubrandenburg before reaching Lübeck, their port of departure for Russia,  or the Heides may have been able to join the group from Darmstadt by simply meeting up with them in Lübeck, only about 160 miles from Neubrandenburg. 
By 1775, Johann and Dorothea Heide had 5 children ranging from 8 years to 1 week old. Dorothea was probably related to Samuel Rusch (#106) and/or August Ertman Rusch (#107) who appear on the same page as Johann and Dorothea Heide in the 1767 census and immediately after Johann Heide (#105) in the 1775 census.
Samuel Rusch is included on the Kulberg Lists, but he has no daughter named Dorothea, only Helena and Catharina.  In the 1767 census, he lists a daughter named Dorothea, but she is only 10 years old.  Could he have had an older daughter with the same name? Or is there an error with the age of her daughter in the 1767 census? If there was a typographical error in her age, it may have actually been 20, and that's a match for the Dorothea Rusch who married Johann Heide. It's possible she was accidentally listed in both censuses.
The other Rusch in Grimm, August Erdmann Rusch, looks like he could be a brother to Samuel, with their ages just one year apart. August doesn't appear in the Kulberg Lists, although he does show up in the 1767 Grimm Census.  August has no daughter named Dorothea in 1775, but if his family was accidentally omitted from the Kulberg Reports, and he did have an older daughter named Dorothea, that would explain why her name was missing from the Kulberg Reports. Had she not married Johann Heide or anyone else before 1767, she likely would have appeared as a child in the entry for either Samuel's or August's family in the 1767 census.
1775 Grimm Census 
By 1798, there were 7 children living with Johann Heide and his wife. The names of three older children are missing, most likely because they married and were living in a different household. Of course this does not include the four children who did not survive the journey to Grimm.
1798 Grimm Census 
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