Prince Janusz Ostrogski was a Polish-Lithuanian noble and statesman. He served as a voivode of Volhyn (1584-1593), as a castellan of Kraków, and as a starosta of Bohuslav, Biała Cerkiew, Czerkasy and Kaniów, Perejasław and Włodzimierz.

Dubno is a city and municipality located on the Ikva River in Rivne Oblast (province) of western Ukraine. It serves as the administrative center of Dubno Raion (district). The city is located on intersection of two major European routes, E40 and E85. The city is estimated to have a population of 36,901 . It is located within the historic region of Volhynia.