Kingdom of Galicia–Volhynia
The area of the gmina of Błażowa in the past was located along the border of Red Ruthenia and Lesser Poland. In the early 14th century, it was part of the Kingdom of Galicia–Volhynia. In 1340 Błażowa was annexed by Polish King Kazimierz Wielki, who created the Sanok Land (1366) and Przemyśl Land, and established several towns in the area (Rzeszów 1354, Brzozow 1359, Tyczyn 1368).