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.
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.
Due to the Mongol invasion of 1240, Michael of Chernigov left Kiev to seek military assistance from the Kingdom of Hungary (Béla IV). 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 in Masovia. Receiving no results in Poland, he eventually asked Daniel of Galicia for asylum due to the Mongol invasion.
^Duczko, Wladyslaw (2004). Viking Rus: Studies on the Presence of Scandinavians in Eastern Europe. Koninklijke Brill NV, Leiden, The Netherlands. ISBN90-04-13874-9
^Noonan, Thomas (2001). The Khazar Qaghanate and Its Impact on the Early Rus' State: The translatio imperii from Itil to Kiev. Nomads in the Sedentary World, Anatoly Mikhailovich Khazanov and Andre Wink, eds. p. 76-102. Richmond, England: Curzon. ISBN0-7007-1370-0
^Golden, Peter Benjamin (1982). The Question of the Rus' Qaganate. Archivum Eurasiae Medii Aevi. pp. 77–92
^Pritsak, Omeljan (1981). The origin of Rus. Cambridge, Mass.: Distributed by Harvard University Press for the Harvard Ukrainian Research Institute.
^Zuckerman, Constantine (2007). The Khazars and Byzantium – The First Encounter. In The World of the Khazars: New Perspectives – Selected Papers from the Jerusalem 1999 International Khazar Colloquium, eds. Peter Benjamin Golden, Haggai Ben-Shammai, and András Róna-Tas, pp. 399–432. Leiden, Netherlands: Brill.
^Sveerne (konung of Holmgård (Novgorod) and Kønugård (Kiev))
^Olga was first of Rurikid to be baptized by Emperor Constantine VII but failed to bring Christianity to Kiev
^Ярополк is modern Ukrainian, Jaropełk is Polish, Jaropluk is Czech, Jaropelkas is Lithuanian, Iaropelkos is Greek, Jaropolk is German and Swedish.
^The Old Slavonic is Свѧтопълкъ in the Cyrillic alphabet, the modern Ukrainian is Святополк, Polish is Świętopełk, Czech is Svatopluk, and Slovak is Svätopluk. Reconstructed, his name is Sventopluk. More commonly, his name is given in its Latin and Frankish equivalents: Suentopolcus, Suatopluk, Zventopluk, Zwentibald, Zwentibold, Zuentibold, or Zuentibald.