THE MISSING CITY OF LWÓWEK ŚLĄSKI
Regarding province Bolesławjec in the south-west Silesia: Bolesławiec was a small, insignificant town at that time, 18 km south there was way more important city of Lwówek (nowadays Lwówek Śląski):
-Magdeburg city rights in 1217, there was created a mix of Magdeburg and Flanders city rights called in iure lembergensi (Lwówek's Law) that at least 12 future cities of lower and upper Silesia, Bohemia and Hungary were granted these city rights law
-with around 11k inhabitants at that time (3rd biggest city of Silesia at that time after Wrocław and Świdnica)
-city has double city walls that repelled Hussites preventing successful siege and pillage (this happened to Bolesławiec and other nearby towns)
-has bigger (and medieval) city hall than Wrocław and it still exists. Its interiors with ribbed vault are refered to as a smaller version of Prague castle
-was an independent Silesian duchy in the late XIII century
-that had own mint, coin and city weighing building (read: rich)
-5th biggest market square of Silesia in the city center
-The city was located on Via Regia - an important trade road from east to west Europe
-in 1243 it was the location of the first knightly (jousting) tournament on Polish lands by polish king Bolesław Rogatka!
-has the oldest brewery in Poland that is also the oldest still functioning company in Poland since 1209
-the city had strong ties with Kraków (Some known people migrated between both cities, trade exchange)
-during renaissance the city was heavily rebuilt under the supervision of Italian architect Archonatti who gave the city Mediterranean look
-HRE emperor Albert II visited this city in 1438, emperor Rudolph II in 1577 (which wasn't the case for any other nearby cities till Napoleon's times, so it says a bit about prestige and status of the city at that time)
-Many kings, princes and leaders visited the city of Lwówek as well, like Matthias Corvin, Charles XII Wittelsbach, Friedrich the Great, John Quincy Adams, Friedrich Wilhelm III of Prussia, Alexander I Romanov, Władysław III Spindleshanks
-till 1444 there was a princely castle that the dukes of Jawor (Jauer) resided (mutually with Jauer's castle)
-This town was also a territory of Silesian medieval gold rush that was about to end for the city in mid XIV century to later become a clothier's guild den with more than 450 simultaneously operating clothier's workshops in the city.
-the city used to be named a sister city of Görlitz because of the same size of both cities till thirty years war and the style of architecture, later Lwówek was referred as Silesian Roetheburg
-Maltese holy order has a renaissance palace in the city
-Płakowice castle (palace actually) is a renaissance residence often called Silesian Wawel Castle because of the columns and arches that are on the interior courtyard
-Lwówek was being called by the press at that time as Music Weimar of Silesia because of the great composers and musicians (Ferenz List[2][3], Hector Berlioz[2][3], Richard Wagner[2][3], Hans von Bülow[1][3], David Popper, Karol Tausig, Hans Bronsart, Louis Spohr) at that time performing and concerting in the Hohenzollern's palace in the city. The concerts attracted visitors from Wrocław to Dresden
Everything changed after thirty years war and the location fell in decline.
Renaming province Bolesławiec to Lwówek would be perfect as well as changing the trade good produced in the location (excellent sandstone was also produced here, even the Brandenburg Gate was partially built from it). Please take that in consideration if possible.
Don't ignore historically important places just because they were heavily damaged by thirty years war...