Grand Prince of Kiev
The grand prince of Kiev (sometimes grand duke) was the title of the ruler of Kiev and the ruler of Kievan Rus' from the 10th to 13th centuries. In the 13th century, Kiev became an appanage principality first of the grand prince of Vladimir and the Mongol Golden Horde governors, and later was taken over by the Grand Duchy of Lithuania. Princes of Kiev. Mythological rulers. According to Slavophiles, Kyi ruled since 430, one of the dates attributed to the legendary founding of Kiev in 482, although that date relates to Kovin on the Danube in  Serbia. Some historians speculate that Kyi was a Slavic prince of eastern Polans in the 6th century. Kyi's legacy along with Shchek's is mentioned in the Book of Veles, the authenticity of which, however, is disputed. Oleg, an apocryphal Kiev voivode, probably of Danish or Swedish origin, ruled under the overlordship of the Khazar Khaganate. Bravlin was a Varangian prince or chieftain, who led a Rus military expedition to devastate the Crimea, from Kerch to Sugdaea, in the last years of the 8th century. According to some Russian historians (i.e., Gleb S. Lebedev), Dir was a "chacanus" of  Rhos (Rus khagan). Thomas Noonan asserts that one of the Rus "sea-kings", the "High king", adopted the title khagan in the early 9th century. Peter Benjamin Golden maintained that the Rus became a part of the Khazar federation, and that their ruler was officially accepted as a vassal khagan of the Khazar Khagan of Itil. Some western historians (i.e., Kevin Alan Brook) suppose that Kiev was founded by Khazars or Magyars. Kiev is a Turkic place name ("Küi" = riverbank + "ev" = settlement). At least during the 8th and 9th centuries Kiev functioned as an outpost of the  Khazar empire (a hill-fortress, called "Sambat", "high place" in Old Turkic). According to Omeljan Pritsak, Constantine Zuckerman and other scholars, Khazars lost Kiev at the beginning of the 10th century. Rurik Dynasty. The Rurikids were descendants of Rurik (Rørikr), a Varangian (Viking) pagan chieftain. Princes of Kiev (Mongol invasion). Due to the Mongol invasion of 1240, Michael of Chernigov left Kiev to seek military assistance from King Béla IV of Hungary. During that time, the prince of Smolensk, Rostislav, occupied Kiev, but was captured the same year by Daniel of Galicia who placed his voivode Dmytro to guard Kiev  while the grand prince was away. Being unsuccessful in Hungary, Michael visited Konrad I of Masovia. Receiving no results in Poland, he eventually asked Daniel of Galicia for asylum due to the Mongol invasion. Olshanski dynasty. Since the 14th century, the principality of Kiev started to fall under the influence of Grand Duchy of Lithuania. In 1299, the Metropolitan of Kiev Maximus moved his metropolitan see from Kiev to Vladimir-on-Klyazma. In 1321, after the battle on the Irpin River, Gediminas installed Mindgaugas, one of his subjects from the house of Olshanski, a descendant of the family of Vseslav  of Polotsk that was exiled to the Byzantine Empire. Rurik dynasty. In 1331, Kiev was once again taken by a member of the Rurik dynasty (Olgovich branch), the prince of Putivl. After the Battle of Blue Waters in 1362, Kiev and its surrounding areas were incorporated into the Grand Duchy of Lithuania by Grand Duke Algirdas.