The Northern Crusades or Baltic Crusades were Christianization campaigns undertaken by Catholic Christian military orders and kingdoms, primarily against the pagan Baltic, Finnic and West Slavic peoples around the southern and eastern shores of the Baltic Sea, and also against Orthodox Christian East Slavs.
Saare County is one of 15 counties of Estonia. It consists of Saaremaa, the largest island of Estonia, and several smaller islands near it, most notably Muhu, Ruhnu, Abruka and Vilsandi. The county borders Lääne County to the east, Hiiu County to the north, and Latvia to the south. In 2022, Saare County had a population of 31,292, which was 2.4% of the population of Estonia.
The Battle of Inab, also called Battle of Ard al-Hâtim or Fons Muratus, was fought on 29 June 1149, during the Second Crusade. The Zengid army of the atabeg Nur al-Din Zengi destroyed the combined army of Prince Raymond of Poitiers and the Assassins of Ali ibn-Wafa. The Principality of Antioch was subsequently pillaged and reduced in size as its eastern border was pushed west.
Muhu is an island in the West Estonian archipelago of the Baltic Sea. With an area of 198 km2 (76 sq mi), it is the third largest island belonging to Estonia, after Saaremaa and Hiiumaa.
Ugaunians or Ugannians, referred to as Chudes by the earliest Russian chronicles, were a historic Finnic people inhabiting the southern Estonian Ugandi County that is now Tartu, Põlva, Võru and Valga counties of Estonia.
Ugandi was an independent county between the east coast of Lake Võrtsjärv and west coast of Lake Pskov, bordered by Vaiga, Mõhu, Nurmekund, Sakala, Tālava, and The Principality of Pskov. Ugandi had an area of approximately 3000 hides. Ugandi corresponded roughly to the present Estonia's territory of Võru County, Põlva County and half of Tartu County and Valga County, as well as Petseri County.
Saint George's Night Uprising in 1343–1345 was an unsuccessful attempt by the indigenous Estonian population in the Duchy of Estonia, the Bishopric of Ösel-Wiek, and the insular territories of the State of the Teutonic Order to rid themselves of Danish and German rulers and landlords who had conquered the country in the 13th century during the Livonian Crusade; and to eradicate the non-indigenous Christian religion. After initial success the revolt was ended by the invasion of the Teutonic Order. In 1346, the Duchy of Estonia was sold for 19,000 Köln marks by the King of Denmark to the Teutonic Order. The shift of sovereignty from Denmark to the State of the Teutonic Order took place on November 1, 1346.
The Battle of Durbe was a medieval battle fought near Durbe, 23 km (14 mi) east of Liepāja, in present-day Latvia during the Livonian Crusade. On 13 July 1260, the Samogitians soundly defeated the joint forces of the Teutonic Knights from Prussia and the Livonian Order from Livonia. Some 150 knights were killed, including Livonian master Burkhard von Hornhausen and Prussian land marshal Heinrich Botel. It was by far the largest defeat of the knights in the 13th century: in the second-largest, the Battle of Aizkraukle, 71 knights were killed. The battle inspired the Great Prussian Uprising and the rebellions of the Semigallians, the Couronians, and the Oeselians. The battle undid two decades of Livonian conquests and it took some thirty years for the Livonian Order to restore its control.
The Battle of Lihula or Battle of Leal was fought between invading Swedes and Estonians for the control of a castle in Lihula, Estonia in 1220. The exact date remains uncertain, though some historians suggest that the battle took place on August 8. The event is described in the Chronicle of Henry of Livonia and the Livonian Rhymed Chronicle.
Oeselians or Osilians is a historical name for the people who prior to the Northern Crusades in the 13th century lived in the Estonian island of Saaremaa (Ösel) – the Baltic Sea island was also referred as Oeselia or Osilia in written records dating from around that time. In Viking Age literature, the inhabitants were often included under the name "Vikings from Estonia", as written by Saxo Grammaticus in the late 12th century. The earliest known use of the word in the (Latinised) form of "Oeselians" in writing was by Henry of Livonia in the 13th century. The inhabitants of Saaremaa (Ösel) are also mentioned in a number of historic written sources dating from the Estonian Viking Age.
The Livonian crusade consists of the various military Christianisation campaigns in medieval Livonia – modern Latvia and Estonia – during the Papal-sanctioned Northern Crusades in the 12th–13th century. The Livonian crusade was conducted mostly by the Holy Roman Empire and the Kingdom of Denmark. It ended with the creation of Terra Mariana and the Danish duchy of Estonia. The lands on the eastern shores of the Baltic Sea were one of the last parts of Europe to be Christianised. The available information is largely based on Livonian Chronicle of Henry.
Battle of Otepää was a battle during the Livonian Crusade in 1217. The battle ended with a victory for the Estonians and Russians.
The Battle of Viljandi was a battle during the Livonian Crusade in 1211 in Viljandi, Estonia. The battle ended with no decisive victory for the invaders as they were unable to take the stronghold. They did however, manage to baptise the people inside the stronghold.
The Battle of Cēsis was fought between native Estonian forces and the Germanic knights and their allies during the Livonian Crusade.
Battle of Turaida was one of the biggest battles of Livonian crusade between Estonian tribes and Livonian Brothers of the Sword. The battle took place around modern Turaida, Latvia.
The Battle of Lehola was fought in 1215 between the Livonian Brothers of the Sword, a crusading military order, and the Estonians.
The Battle of Riga was an attempt by native Estonian forces to repel the Crusader knights and their allies during the Livonian Crusade.
Victory over the Swedish army in the Battle of Lihula inspired the Oeselians to further fight. In 1221 they tried to conquer the Danish stronghold in Tallinn with the help of Revalians, Harrians, and Vironians. They besieged the stronghold for 14 days and all Danish outbreaks were repulsed. One day, four cogs appeared unexpectedly, which the Oeselians thought to have been carrying the Royal Army of the Danish king. The siege was ended and the Oeselians left.
The Valjala Stronghold was a major ringfort on the island of Saaremaa in Estonia. Established in the 12th century, at the time it was the most important Oeselian stronghold. Its surrender in 1227 finalized the crusader conquest of Estonia.
