The King of Ruthenia, also known as the King of Rus' or King of Russia (Latin: Rex Russiae, Rex Ruthenorum; Ukrainian: Король Русі), was the title of the ruler of the Kingdom of Galicia–Volhynia, granted by the Pope.
The title was passed on to the Romanovichi as rulers of the united Kingdom of Galicia–Volhynia. By the 15th century, the title was used as a claim by other royal houses.
Lviv (/ləˈviːv/ lə-VEEV or /ləˈviːf/ lə-VEEF; Ukrainian: Львів [ˈlʲviu̯] ; Polish: Lwów [ˈlvuf] ; see below for other names) is the largest city in western Ukraine, as well as the fifth-largest city in Ukraine, officially with a population of 723,403 (2025 estimate). It serves as the administrative centre of Lviv Oblast and Lviv Raion, and is one of the main cultural centres of Ukraine. Lviv also hosts the administration of Lviv urban hromada. It was named after Leo I of Galicia, the eldest son of Daniel, King of Ruthenia.
Lviv (then Lwów) emerged as the centre of the historical regions of Red Ruthenia and Galicia in the 14th century, superseding Halych, Chełm, Belz, and Przemyśl. It was the capital of the Kingdom of Galicia–Volhynia from 1272 to 1340, when it went to King Casimir III the Great of Poland in a war of succession. In 1356, Casimir the Great granted it town rights. From 1434, it was the regional capital of the Ruthenian Voivodeship in the Kingdom of Poland. In 1772, after the First Partition of Poland, the city became the capital of the Habsburg semi-autonomous Polish-dominated Kingdom of Galicia and Lodomeria. From 1918, between the wars, the city was the centre of the Lwów Voivodeship in the Second Polish Republic. There it flourished in culture, industry and academia such as the Lwów School of Mathematics, the Lwów Historical School (Polish: lwowska szkoła historyczna) and the Lwów School of Economics. After the German-Soviet invasion of Poland in 1939, the massacre of Lwów professors took place, and Lwów was eventually annexed by the Soviet Union.
Casimir III the Great (Polish: Kazimierz III Wielki; 30 April 1310 – 5 November 1370) reigned as the King of Poland from 1333 to 1370. He also later became King of Ruthenia in 1340, retaining the title throughout the Galicia–Volhynia Wars. He was the last Polish king from the Piast dynasty.
Casimir inherited a kingdom weakened by war and under his rule it became relatively prosperous and wealthy. He reformed the Polish army and doubled the size of the kingdom. He reformed the judicial system and introduced several undying codified statutes, gaining the title "the Polish Justinian". Casimir built extensively and founded the Jagiellonian University (back then simply called the University of Krakow), the oldest Polish university and one of the oldest in the world. He also confirmed privileges and protections previously granted to Jews and encouraged them to settle in Poland in great numbers.
Leo I of Galicia (Old Ruthenian: Левъ Данилович; Ukrainian: Лев Дани́лович, romanized: Lev Danýlovych; Latin: Leo dux Ruthenorum; c. 1228 – c. 1301) was King of Ruthenia, Prince of Belz (1245–1264), Przemyśl, Galicia (1264–1269), and Kiev (1271–1301).
He was a son of King Daniel of Galicia and his first wife, Anna Mstislavna Smolenskaia (daughter of Mstislav Mstislavich the Bold). As his father, Lev was a member of the senior branch of Vladimir II Monomakh descendants.
Daniel Romanovich (1201–1264) was Prince of Galicia (1205–1207; 1211–1212; 1230–1232; 1233–1234; 1238–1264), Volhynia (1205–1208; 1215–1238), Grand Prince of Kiev (1240), and King of Ruthenia (1253–1264).
The Rurik dynasty, also known as the Rurikid or Riurikid dynasty, as well as simply Rurikids or Riurikids, was a noble lineage allegedly founded by the Varangian prince Rurik, who, according to tradition, established himself at Novgorod in the year 862. The Rurikids were the ruling dynasty of Kievan Rus' and its principalities following its disintegration.
The Romanovichi ruled the southwestern territories, which were unified by Roman the Great and his son Daniel, who was in 1253 crowned by Pope Innocent IV as the king of Ruthenia. Galicia–Volhynia was eventually annexed by Poland and Lithuania. The northern and northeastern territories were unified by the Daniilovichi of Moscow; by the 15th century, Ivan III threw off the control of the Golden Horde and assumed the title of sovereign of all Russia. Ivan IV was crowned as the tsar of all Russia, where the Rurik line ruled until 1598, following which they were eventually succeeded by the House of Romanov.
Lviv (/ləˈviːv/ lə-VEEV or /ləˈviːf/ lə-VEEF; Ukrainian: Львів [ˈlʲviu̯] ; see below for other names; Polish: Lwów Polish pronunciation: [lvuf] ) is the largest city in western Ukraine, as well as the fifth-largest city in Ukraine, officially with a population of 723,403 (2025 estimate). It serves as the administrative centre of Lviv Oblast and Lviv Raion, and is one of the main cultural centres of Ukraine. Lviv also hosts the administration of Lviv urban hromada. It was named after Leo I of Galicia, the eldest son of Daniel, King of Ruthenia.
Lviv (then Lwów) emerged as the centre of the historical regions of Red Ruthenia and Galicia in the 14th century, superseding Halych, Chełm, Belz, and Przemyśl. It was the capital of the Kingdom of Galicia–Volhynia from 1272 to 1340, when it went to King Casimir III the Great of Poland in a war of succession. In 1356, Casimir the Great granted it town rights. From 1434, it was the regional capital of the Ruthenian Voivodeship in the Kingdom of Poland. In 1772, after the First Partition of Poland, the city became the capital of the Habsburg semi-autonomous Polish-dominated Kingdom of Galicia and Lodomeria. From 1918, between the wars, the city was the centre of the Lwów Voivodeship in the Second Polish Republic. There it flourished in culture, industry and academia such as the Lwów School of Mathematics, the Lwów Historical School (Polish: lwowska szkoła historyczna) and the Lwów School of Economics. After the German-Soviet invasion of Poland in 1939, the massacre of Lwów professors took place, and Lwów was eventually annexed by the Soviet Union.