South Prussia
In 1793, the Kingdom of Prussia annexed the town in the Second Partition of Poland and administered it as part of the Province of South Prussia. During the Napoleonic Wars, Piotrków became part of the Duchy of Warsaw (1807–15) and was a district seat in the Kalisz Department. After the defeat of Napoleon in 1815, Piotrków became part of Congress Poland, a puppet state of the Russian Empire.