Krzysztof Zygmunt Pac was the Chancellor (1658-1684) of the Grand Duchy of Lithuania. He was the brother of Michał Kazimierz Pac, the Great Lithuanian Hetman (1667-1682) who sponsored St Peter and St Paul's Church in Vilnius, a masterpiece of Baroque architecture. After their deaths, the influence of the Pac family deteriorated. K. Z. Pac was an educated man. He studied in Kraków, Liège (now Belgium), and for eight years at the University of Perugia in Florence, Italy. Wikipedia
The definitive Wikipedia entry for Krzysztof Zygmunt Pac. Wikipedia is the biggest multilingual free-content encyclopedia on the Internet. en.wikipedia.org/wiki/Krzysztof_Zygmunt_Pac
