Silesian Piasts
The duchy was re-united with the Duchy of Legnica in 1419, then fragmented again, and united once more with Legnica under Duke Christian in 1664. When the Kingdom of Bohemia was inherited by the Habsburg dynasty of Austria in 1526, the duchy fell under their overlordship as Bohemian kings, although it was still ruled as a lien by the Silesian Piasts.