Beside Royal Prussia, a land of the Polish Crown since 1466, King Frederick II of Prussia also seized the adjacent lands of the Prowincja of Greater Poland to the south from the Polish–Lithuanian Commonwealth in the First Partition of Poland of 1772.
In addition to Royal Prussia, which was under Polish Crown control since 1466, King Frederick II of Prussia seized adjacent territories in Greater Poland Province from the Polish–Lithuanian Commonwealth as a result of the First Partition of Poland in 1772.