Rody pruskie:
Since Teutonic times the language of the Prussian elite and administration has been German. This did not change after the incorporation into the kingdom of Poland. It was only from the beginning of the 16th century that the role of the Polish language began to increase. Since 1527 there have been complaints from representatives of large cities that some council members use Polish, although they know German. In 1555, a canon of Gniezno delivered a speech to the Prussian Sejm in Polish, without the help of an interpreter. In the second half of the 16th century, royal decrees were issued in Polish, debates in the Landtag were held in Polish.
Great Prussian families polonised their names: the Baysen to Bażyński; the Zehmen to Cema; the Dameraw to Działyński, and the Mortangen to Mortęski, the Kleinfelds to Krupocki.
księstwa
Rody magnackie Ukrainy:
Polskie rodziny szlacheckie na Litwie: