Duchy of Teschen
Politically Janovice belonged initially to the Duchy of Teschen, formed in 1290 in the process of feudal fragmentation of Poland and was ruled by a local branch of Piast dynasty. In 1327 the duchy became a fee of Kingdom of Bohemia, which after 1526 became part of the Habsburg Monarchy. In 1573 it was sold as one of 16 villages and the town of Friedeck and formed a state country split from the Duchy of Teschen.