Family A20-27 in The Immigration of German Colonists to Denmark and Their Subsequent Emigration to Russia in the Years 1759-1766.
Family B-1619 in The Immigration of German Colonists to Denmark and Their Subsequent Emigration to Russia in the Years 1759-1766.
Family Rus-14-44 in The Immigration of German Colonists to Denmark and Their Subsequent Emigration to Russia in the Years 1759-1766.
Family #63 in the 1775 Grimm census.
Family #56 in the 1798 Grimm census.
According to Danish records, Michael Stähle/Stehli was born in Württemberg around 1735; this date does not match his birth year given in the 1775 census which is 1729, but clearly the men are the same person.
He traveled with his wife, Maria Regina, who was born in 1742. At the time they arrived in Denmark in 1761, the couple was married but had no children.  They arrived in the City of Schleswig on 09 May 1761 and took their oath of allegiance in July.  In August they were recorded as living at #10 Gruetzkost in Colony G2 Friderichsfeld, in the region of Gottorf.  The family remained there until January of 1765 when they were documents as leaving for Russia on 12 January 1765.  Their final destination was the Volga German Colony of Grimm. 
Since he arrived in the Volga region before the bulk of the Volga German settlers, he settled in another village first, such as Dobrinka, before making his final move to Grimm. He is first noted in the 1775 Grimm census.
1775 Grimm Census 
1798 Grimm Census 
Johann Michael Stehli is not mentioned in the 1834 census and had most likely passed away.  Typically, male deaths were noted in the next official census. It is likely he passed away before 1816 and his death was noted in the census that came out later that year Had he survived to 1834, he would have been 105 years old.
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