EN
The article deals with the collection of nine Ms. opera scores of Italian provenance written from 1685–1700, and deposited in the Český Krumlov Branch of the State Regional Archives in Třeboň, South Bohemia. Based on the surviving sources and literature, the article looks at the possible wals by which they might have arrived in a South-Bohemian stately home, and to the local music life at the time when it was owned by Johann Christian von Eggenberg. During his reign a theatre with an orchestra pit was built in the grounds of the Český Krumlov stately home. His aims to set up an opera company are also documented. The author of the article dedicated her dissertation, submitted at the Faculty of Letters of Charles University, Prague in 2004, to the most important opera in the Český Krumlov collection, La Forza della virtủ and a critical dition of its score and libretto. The artikle sums up the relevant sources and character of the libretto, and analyses the key points of its setting to music by Carlo Francesco Pollarolo.