Ambrosius Froschäuser, son of Johann Georg Froschäuser, was from Schmidttor [location not verified]. He married 28 April 1746 in Gelnhausen, east northeast of Frankfurt, to Anna Margaretha Schaub. They have the following children, each born/baptized in Gelnhausen: (1) Katharina Juliana, born 8 January 1747; (2) Johann Paul Christoph, born 13 October 1749; (3) Philipp Jakob, born 5 February 1751; (4) Johannes, born 10 February 1754; and (5) Anna Maria Dorothea, born 3 October 1756.
The Froschhäuser family immigrated to Russia, arriving from Lübeck at the port in Oranienbaum on 4 July 1766 aboard the frigate Love & Unity under the command of Thomas Fairfax. Two of the children were deceased by this time, as Phillip, his wife Anna, sons Johann Philipp and Johannes, and daughter Dorothea were the only ones in the group.
The Froschäuser family settled in Beideck where son Philipp and his family are recorded on the 1798 Census in Household No. Bd25.
The spelling of this surname has also become Froscheiser and Froschauser, among others, through the years as descendants of this family have immigrated to other locations around the globe.
- Frey, Julius. "Auswanderung aus den Kreisen Gelnhausen und Büdingen im Jahre 1766." GeschischisblätterÜrstadt und Kries Gelnhausen.
- Mai, Brent Alan. 1798 Census of the German Colonies along the Volga: Economy, Population, and Agriculture (Lincoln, NE: American Historical Society of Germans from Russia, 1999).
- Pleve, Igor. Lists of Colonists to Russia in 1766: Reports by Ivan Kulberg (Saratov: Saratov State Technical University, 2010): Document No. 1668.