Family A23-15 in The Immigration of German Colonists to Denmark and Their Subsequent Emigration to Russia in the Years 1759-1766.
Family B-1570 in The Immigration of German Colonists to Denmark and Their Subsequent Emigration to Russia in the Years 1759-1766.
Family Rus14-54 in The Immigration of German Colonists to Denmark and Their Subsequent Emigration to Russia in the Years 1759-1766.
Family #111 in the 1775 Grimm census.
During that time, Germans were suffering from war and famine, and had difficulty providing for their families. His father had a difficult time supporting his family.
In 1759, Danish King Frederick V invited Germans from Hessen and the Palantinate to help settle the area of Schleswig-Holstein, at that time under the control of the Danes. The king was interested in converting the marsh lands to arable farm land. Germans were known for their good farming skills and for being hard workers, so it seemed like a win-win situation both both Danes and Germans. Eager to provide a better life for their family, his parents decided the opportunity to immigrate to Denmark was too attractive to pass up.
They departed Germany on 02 June 1761 with a group of other emigrants under the direction of Johann Peter Hornus. The group arrived in the city of Schleswig on 06 June 1761. He was traveling with his parents and four siblings:
On 08 August 1761, the family lived at Number 11 Frisch auf in Colony G16 Prinzenmoor in the district of Gottorf. Three years later on 10 November 1764 they lived at Number 8 Auf dem Brinck in the same district.
The marshlands were very inhospitable to the farmers. Although the Germans were good farmers with typical farm land, it was far more difficult to convert these former wetlands and grow crops. Most of the German immigrants barely reaped enough to feed their families, let alone to provide food for others in Denmark. When Catherine the Great invited Germans to immigrate to Russia,Johann Friedrich's parents decided it offered them a better opportunity to provide for their family.
The family left Denmark on 22 November 1765 and are included on a list of German Danes bound for Grimm, Russia. He and his family are listed in the first census of Grimm.
1767 Grimm Census 
Those early years in Grimm were difficult, too. Many immigrants did not survive the journey to the Volga. Others were attacked by the Cossacks from the Ukraine and other local bandits and tribal people. One researcher tells of 1,573 settlers being kidnapped in 1774; only half were freed and the rest were killed or made slaves.
It was during this time frame that his father Johann Christian Seifert passed away. It's not clear exactly how he perished, but hundreds of German settlers lost their lives during battles that occurred during the early years of settlement in the Volga colonies. He was very likely one of them.
By the time of the 1775 census, Johann Friedrich's mother Augusta Maria had remarried Adam Schneider Schneider-5165.
1775 Grimm Census 
His two eldest sisters, Eva Catharina and Maria Louisa, were old enough to marry and were probably living with their husband's families.
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