The history of Tarnobrzeg is closely tied with the noble Leliwita family, which in the 16th century changed its name into Tarnowski.
In 1349 Rafal of Tarnów married a woman named Dzierzka, who was the owner of Wielowieś, moving there after the wedding.
Their estate gradually expanded, in 1365 they purchased Trzesn and Rzochow, in 1375 Sielec and Sobow, and in 1397, Jan Tarnowski purchased several villages.
In the late 15th century, Jan Spytek Tarnowski purchased, among others, Dzików, together with its fortified stronghold.
Stanislaw Tarnowski (1541–1609), who was a courtier of Kings Stefan Batory and Sigismund III, managed to convince the latter to grant town charter to Nowy Tarnów, later called Tarnobrzeg.
His son Michal Stanislaw (1590–1654) in the 1620s began expansion and modernization of the town, planning a street system together with a market square with a town hall.
Furthermore, he expanded the Dzików stronghold and the church at Miechocin.

The development of Nowy Tarnów was stopped during the catastrophic Swedish invasion of Poland (1655–1660), when the town was destroyed by the Swedes.
After the invasion, Jan Stanislaw Tarnowski funded a Dominican Monastery, with the painting of Our Lady of Dzików (1678), which was moved there from the Dzików Castle.
In 1734, the Dzików Confederation was formed in the Dzików Castle, and among its creators was Jozef Mateusz Tarnowski.
In the late 18th century, the castle was remodelled in the late Baroque style, and last owners of Dzików were Jan Zdzislaw Tarnowski (1862–1937), and Artur Tarnowski (1903–1984).
The history of Tarnobrzeg is closely tied with the noble Leliwita family, which in the 16th century changed its name into Tarnowski. In 1349 Rafal of Tarnów married a woman named Dzierzka, who was the owner of Wielowieś, moving there after the wedding. Their estate gradually expanded, in 1365 they purchased Trzesn and Rzochow, in 1375 Sielec and Sobow, and in 1397, Jan Tarnowski purchased several villages. In the late 15th century, Jan Spytek Tarnowski purchased, among others, Dzików, together with its fortified stronghold. Stanislaw Tarnowski (1541–1609), who was a courtier of Kings Stefan Batory and Sigismund III, managed to convince the latter to grant town charter to Nowy Tarnów, later called Tarnobrzeg. His son Michal Stanislaw (1590–1654) in the 1620s began expansion and modernization of the town, planning a street system together with a market square with a town hall. Furthermore, he expanded the Dzików stronghold and the church at Miechocin.
The development of Nowy Tarnów was stopped during the catastrophic Swedish invasion of Poland (1655–1660), when the town was destroyed by the Swedes. After the invasion, Jan Stanislaw Tarnowski funded a Dominican Monastery, with the painting of Our Lady of Dzików (1678), which was moved there from the Dzików Castle. In 1734, the Dzików Confederation was formed in the Dzików Castle, and among its creators was Jozef Mateusz Tarnowski. In the late 18th century, the castle was remodelled in the late Baroque style, and last owners of Dzików were Jan Zdzislaw Tarnowski (1862–1937), and Artur Tarnowski (1903–1984).
Tarnobrzeg