I have recently been informed that my ggggrandfather, Wenzel Long, spelled his name Wenzl Lang per the archives in the Czech Republic. He came from Prostibor, which is only a few miles from the locations you asked about.
Wenzel Long was born in 1805, married Mary Hamlet (Maria nee Hamperl) and had three children, Joseph, b. 1835, Elizabeth, b 1838 and Susan, b. 1842. They emmegrated to the US in 1855 and died and are buried in Clintonville, Wisconsin.
Is there any connection with your family?