Leopolis was founded about 1259 by the Ruthenian prince Leo Danilowicz, who moved here his residence from Halicz in 1270.
At this congress the differences between Casimir and John of Bohemia were finally adjusted; peace was made between the king of Poland and the Teutonic Order on the basis of the cession of Pomerania, Kulm, and Michalow to the knights, who retroceded Kujavia and Dobrzyn; and the kings of Hungary and Poland further agreed to assist each other in the acquisition of the south-eastern border province of Halicz, or Red Russia (very nearly corresponding to the modern Galicia), in case the necessity for intervention should arise.
Of Halicz, and the ravaging of that fruitful border principality by the Tatars, induced Casimir and Charles Robert to establish their joint influence there, and in 1344 the Red Russian boyar, Demetrius Detko, was appointed starosta, or governor, in the names of the two kings.
Hungary coming to the assistance of Poland, Lubart was defeated and taken prisoner; but Casimir, anxious to avoid a bloody war with Lithuania's Tatar allies, came to a compromise with Lubart whereby Poland retained Halicz with Lemberg, while Vladimir, Belz, and Brzesc fell to the share of Lithuania.
HALICZ, a town of Austria, in Galicia, 70 m.
Halicz, which is mentioned in annals as early as 1113, was from 1141 to 1255 the residence of the princes of that name, one of the principalities into which western Russia was then divided.