Ludwig Loch, illegitimate son of Margaretha Trachmüller, is recorded on the 1798 census of Messer in Household No. Ms70.
Philipp Ludwig Loch and his family are recorded on the 1834 census of Kratzke in Household No. 58 along with a note that they had relocated to Kratzke from Messer in 1819.
Philipp Ludwig Loch and his family are recorded on the 1857 census of Kratzke in Household No. 61.
- 1834 Kratzke Census (Household No. 58).
- 1857 Kratzke Census (Household No. 61).
- 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): Ms70.