Siewierz was ruled by the Silesian Piasts as part of the Duchy of Bytom under Duke Casimir.

Zygmunt Gloger in his book "Historical geography of lands of ancient Poland" ("Geografia historyczna ziem dawnej Polski"), published in 1900, writes that the Duchy of Siewierz belonged to Lesser Poland, after it was bought by the Archbishops of Kraków.

In the course of the Third Partition of Poland in 1795, the duchy and its adjacent regions were annexed by Prussia and incorporated into the new province of New Silesia.

The bishops of Kraków continued to use the title of a Prince of Siewierz until the death of Adam Stefan Sapieha in 1951.

The Dukes of Montebello claim the title prince de Sievers, due to their descent from Marshall Lannes, but without recognition from the French or Polish States.