First records mentioning the name of Kurzelów date from 1136. Originally it was in the possession of Gniezno bishops. Kurzelów received its municipal rights in 1285. Its slow but steady development was halted by the Swedish invasion in the 17th century.
Włoszczowa was given by Queen of Poland Jadwiga to Marshal of the Crown Dymitr of Goraj in the late 14th century. Since then the town stayed in hands of private owners for many years. One of them, starosta of Chęciny Hieronim Szafraniec, managed to obtain municipal rights for Włoszczowa from king Zygmunt Stary (Sigismund the Old) in 1539.