Wikipedia also seems to think so. They give gorole as the Cieszyn Silesian term for highlanders.
It may be the case. In the language of Cieszyn Silesians, the term "gorole" may mean exactly what it means in standard Polish (górale), as opposite to the language of the rest of Upper Silesia. Cieszyn Silesia had been separated from the Prussian part of Upper Silesia from 1741 until 1919 as a part belonging to the Austrian-Hungarian Empire. Even before 1741 Cieszyn Silesia was a seperate entity known as the Principality of Cieszyn.