In the mid-14th century, Zhydachiv, together with all of Galicia, was seized by the Kingdom of Poland, then some time became a part of the Kingdom of Hungary and in 1387 again conquered by Jadwiga of Poland. From 1434 Zhydachiv, was part of Poland's Ruthenian Voivodeship. By the end of 14th century, there were two castles, four Orthodox churches, one Roman Catholic church, a Market Square and a wooden Town Hall. King Wladyslaw Jagiello granted in 1393 Magdeburg rights and several privileges, also founding a Roman Catholic church. Zhydachiv for centuries remained in private hands, among others it belonged to the noble Rzewuski family, had a defensive castle and was the seat of a starosta.
