gm. Jaktorów, pow. grodziski, woj. mazowieckie

The information about colonization of Jaktorów or its surroundings comes from literature and archive materials. The Dutch colonists settled in the village in 1645 under the contract (ratified by the king Władysław IV in the Royal Register with the date June 9, 1645) concluded between Hieronim Radziejowski and the Dutch.

They were granted a permission to settle in the following villages: Baranów, Jaktorów, Kaski i Szczawinek. The contract provided for a 6-year rent-free period, 100 włóka of wastelands and forests to be put under cultivation; in exchange, they were required to pay a rent of 30 florins per one włóka.

No evidence of the colonists' residence has survived.