Family #8 in the 1767 Grimm census.
Andreas Braun was born around 1729 in the area of Wehrad, Marburg, Germany.  He was probably Lutheran, a shoemaker who traveled with his wife and young son to the Volga River colonies in Russia. 
He is probably the brother of Johannes Braun, who also immigrated to Russia and lived in the Colony of Grimm. 
Both were shoemakers. Johannes was born in 1730, but the last town he called home before he immigrated to Russia was Gerz, Germany. Although I searched different spellings of the town name, I couldn't find it on a map or even a description of it through miscellaneous sources on the Internet. It may now be known as Gerzen, a town northeast of Frankfurt. Gerzen is located about 120 miles from Wehrda, the town which Andreas claimed was his last place of residence in Germany. 
Andreas married a woman named Dorothea, last name unknown for now. The couple had a son Johannes, born in 1762, and Peter, born in 1765, according to the Kulberg Reports.
Kulberg Reports 
He and his family immigrated to Russia on 22 July 1766, traveling on the Pink Lev, a small, flat-bottomed ship with a narrow stern, typically square rigged and used to sail short distances and/or in shallow waters.  The ship departed from Luebeck under the command of Fyodor Fyodorov.  The family resided in temporary housing in Oranienbaum, Russia, during the winter before they embarked on their final journey to the Volga River region.
1767 Grimm Census 
By the time the first census of Grimm was taken in 1767, his youngest son Peter had passed away. 
He may have not survived the difficult journey across Russia. Another person who did not survive the journey was Michael Rusch, the father of Adam and Anna Rusch.  Although the relationship between the two families is not known, Andreas and Dorothea took in orphans Adam and Anna Rusch and raised them with their own children. Andreas' youngest child, Maria Elisabeth, was born in 1768,  and he passed away shortly after her birth.
1775 Grimm Census 
Andreas' wife Dorothea remarried Andreas Getz, and she may have been the mother of Georg Wilhelm Getz, born about 1770.  But she, too, passed away soon after that. Her second husband was left with two step-children and two orphans unrelated to him. He remarried a widow named Elisabeth who also brought with her a son from her first marriage, Jakob Lochmann.
For whatever reason, by 1775, orphans Adam and Anna Rusch had moved in with Andreas' brother Johannes and his family.  They still lived close to the Getz household which included the Braun children they had lived with, possibly for almost eight years.
The Rusch children may have been younger siblings to his wife Dorothea or the niece and nephew of an unidentified sister of Andreas and Johannes Braun. What's interesting to consider is that despite the fact that there were other Rusch families living in Grimm, and they were all probably related, none of them took in the Rusch orphans. This tells me there was a reason the Braun's successfully took them into their family.
By 1798, neither of the Rusch children is listed as living with the Braun family, nor are they listed anywhere else in the Grimm census.  Any daughters were probably married and living in other households. It's not clear if any of the children moved to another village or were no longer living.
I believe there is an error in the 1767 Grimm census regarding the two Braun families, listed just a few families apart in the census. The listings look like this:
In the census listings above, it appears that the Rusch orphans were living with Andreas and Dorothea Braun and their son Johannes.
The wording is odd: Living with Andreas Braun in household with Johannes Braun in the Andreas Braun listing, not in the Johannes Braun listing. It's possible the two men were brothers, but they still had separate households in the 1767 census. Did one man take responsibility for the orphans while the children lived with the other family?
HOWEVER, in the 1775 Grimm census, the listing for the family looks like this:
In the 1775 census, there is no listing for an Andreas Braun, his wife Dorothea, or his son Johannes. Andreas Braun passed away, and his wife remarried Andreas Getz. But what happened to the orphans? They appear to have switched households, now (in 1775) living with Johann and Angelina Braun and their two daughters. That doesn't sound like a simple switch unless the Braun men were connected in some way, and Johannes took in the orphans after his brother's/cousin's/friend's death. The 1767 census does have that quirky sentence,Living with Andreas Braun in household with Johannes Braun although we know the two men lived in separate households, but it makes it seem like there is a stronger connection that just immigrants with the same surname.
In 1798, Johannes Braun was a 67-year-old widower.  The only child who remained living with him was daughter Anna Dorothea, who by that time had married Johann Valentin Ramig and the couple had one child living with them. Anna Dorothea's age is a match with the 1767 and 1775 census records.   Angelina clearly passed away prior to 1798. 
This is not a huge issue for the Rusch orphans, especially if they were not blood relatives with the Brauns. But it is interesting to learn that something happened to Andreas and Dorothea Rusch, something not recorded in a census, and that the orphans who lived with them went to live with the other Braun family in Grimm.
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