Radziwiłłowa z Wiśniowieckich Franciszka Urszula
Franciszka Urszula Radziwiłłowa née Wiśniowiecka (* February 13, 1705 Czartorysk in Wołyń- † May 23, 1753 Nowogródek in Belarus), playwright and late Baroque poet from a princely family. According to sources, her comedies were interspersed with original music. The aristocrat’s vocal pieces and choral compositions were readily performed in Poland thirty years before the first Polish opera was created.
Detailed information about the life of the duchess on the website of the Encyclopedia of the Polish Theater and here.
The monograph by Barbara Judkowiak is available here.