Although Ołobok was undoubtedly the oldest settlement unit, it was not granted a charter under German law until the 15th century.
For a long time, due to its considerable distance from the more frequently used trade routes, Ołobok was inhabited primarily by the local population, while the other localities were largely settled by German settlers who had arrived in the west.
The situation was similar with Przejęsław, which also has a very old settlement history. The origins of this settlement date back to the 13th century. Initially, it bore the Slavic name Primisław. The later German name of the locality was Prizndorf, with the name Primsdorf also being used for some time. The village was granted a charter under German law in the 16th century.
During the fragmentation of the Polish lands, the individual localities situated in the area of the present-day Osiecznica Commune, like all of Silesia, gradually became Germanized. The Silesian Piast dukes were completely subordinate to the King of Bohemia. Individual kings, such as Casimir the Great and Władysław Jagiełło, attempted to reattach this land to Poland, but without success.
At the same time, in the face of German pressure on the lands of Silesia, the Slavs living there developed a sense of ethnic distinctiveness and national consciousness. Compact Polish settlement communities in Lower Silesia, despite intensive Germanization, enabled them to survive the period of denationalization, and even at the beginning of our century many villages—despite the prohibitions—spoke exclusively Polish.
The area of today’s Osiecznica Commune was more exposed to Germanization than other regions of Lower Silesia, due to its relatively great distance from the lands of the Polish state at that time.
By the 19th century, the localities of the Osiecznica Commune had already become considerably industrialized. Because of the poor soil, the population took up other occupations, such as crafts, work in the forest, and employment in newly opened factories.
During this period, the locality of Osiecznica developed; it had been established much later than the other localities of the commune. Osiecznica, known as Wehrau-Klitschdorf or simply Neue-Klitschdorf, was initially essentially part of Kliczków.
By the end of the 19th century, the Osiecznica-Kliczków settlement complex had several production plants. Among other facilities, there was a well-prospering paper mill and a roofing-felt factory. Due to the proximity of raw materials, both plants produced relatively inexpensive goods and consequently developed rapidly. The population of both localities grew quickly, exceeding one thousand inhabitants. At that time, the castle library contained, according to records, more than 20,000 volumes.
Ławszowa developed similarly to Osiecznica-Kliczków and had an iron foundry. In addition, it was inhabited primarily by forestry workers. Ławszowa was geared toward accommodating large numbers of seasonal workers during the forestry season, which was served, among other things, by two restaurants with guest rooms. Ławszowa had approximately 1,000 permanent residents.