Sverre Sigurdsson (; c. 1145/1151 – 9 March 1202) was the king of Norway from 1184 to 1202. Many consider him one of the most important rulers in Norwegian history. He assumed power as the leader of the rebel party known as the Birkebeiner in 1177, during their struggle against King Magnus Erlingsson. After Magnus fell at the Battle of Fimreite in 1184, Sverre ruled as sole king of Norway. Differences with the Church, however, led to his excommunication in 1194. Another civil war began against the church-supported Baglers, which lasted beyond Sverre's death in 1202.
The most important historical source on Sverre's life is his biography, the Sverris saga, in part written while Sverre was alive. This saga is likely biased, since the foreword states that part of it was written under Sverre's direct sponsorship. Correspondence between the Pope and the Norwegian bishops can be used as an alternate source when it comes to church affairs. The saga and the letters mostly agree about the hard facts.
Supposedly, King Sverre was short, so he usually directed his troops from horseback during battles. This contrasts greatly to the traditional Norse warrior ideals where the king was expected to lead his men from the front of the battle line. Sverre was a talented improviser, both in political and military life. His innovative tactics often helped the Birkebeiners against more tradition-bound opponents. During battle he had his men operate in smaller groups, while previously tactics similar to the shield wall had been preferred. This made the Birkebeiners more mobile and adaptable.
Early life According to the saga, Sverre was born in 1151 to Gunnhild and her husband Unås, a comb maker from the Faroes. When Sverre was five, the family moved to the Faroes where Sverre was raised in the household of Unås' brother Roe, bishop of the Faroes on Kirkjubøargarður in Kirkjubøur. It was here that Sverre studied for the priesthood and was ordained. The priest school of Kirkjubøur must have been of a high standard, for Sverre was later described as very well educated. The legend says that he was hidden in a cave near the village. This cave actually exists and gave the mountain Sverrahola (303 m, "Sverre's cave") on the south tip of Streymoy its name.
Sverre, however, was not suited for a priestly life. The saga states that he had several dreams which he interpreted as a sign that he was destined for greater things. Further, in 1175, his mother revealed that Sverre was really the son of King Sigurd Munn. In the following year, Sverre travelled to Norway to seek his destiny.
Paternity The tale told in Sverre's saga is the official version. Historians have questioned the veracity of it, especially with regard to Sverre's alleged paternity.Knut Helle: Sverre Sigurdsson (in Norwegian) Norsk biografisk leksikon, Some historians have considered his claim to be King Sigurd's son to be false, as did many of his contemporaries. Others have believed the paternal claim to be true, while most historians have found that the paternal question cannot be given a definite answer. Although the fact that kings fathered illegitimate sons was taken for granted, other facts indicate that Sverre was in his early thirties when he came to Norway, such as the age of his own sons and nephews. It has been cited against Sverre's claim that according to Canon law, one had to be at least 30 years old to be eligible for the priesthood. If Sverre was 30 years old when he became a priest, this would place his birth no later than 1145, making his paternal claim impossible, as Sigurd Munn was born in 1133. This particular objection has lost credence as it has become clear that this age limit was routinely ignored in Scandinavia at the time. However, other objections remain, such as the fact that Sverre consistently refused to undergo an ordeal by fire to prove his claims. At the time, such a trial was routine for new claimants to the throne, and belief in its efficacy seems to have been universal; yet Sverre refused to undergo it. If Sverre's claim was false, however, he would lack royal legitimacy, dooming his plans to failure. Regardless, his motivation is clear: to capture the throne of Norway, whether he could prove royal blood or not. After all, Norway had seen other claimants, since Harald Gille, whose paternity was equally questionable.
The fact that Sigurd Munn's daughter Cecilia acknowledged Sverre as the son of Sigurd is inconclusive. Sverre's actions offered her a welcome possibility to divorce from the marriage with Folkvid the Lawspeaker, into which she claimed to have been forced by Erling Skakke.
Support from Earl Birger Brosa of Sweden is more a sign of pragmatic politics on the part of the Swedes, as their ally party in Norway needed a new leader and had chosen Sverre. Sverre was not the Earl's first choice, however. They had first supported Øystein Møyla, who had died at the Battle of Re in 1177. The Swedish dynastic lines were themselves engaged in civil war, and the current rulers of the family after King Erik were at war with the Danish king Valdemar. Erling Skakke had submitted to Valdemar some decades earlier, and it was beneficial for the Swedes at the time to support the opponents of Erling's regime, namely Sverre.
Norway in 1176 In 1176, Norway was slowly recovering from decades of multiple civil wars. The causes were largely due to the lack of any clear succession laws. According to the old customs, all the king's sons, legitimate or illegitimate, had equal right to the throne. It was customary for brothers to rule the kingdom together, but when quarrels arose, war was frequently the result.
Sigurd Munn, claimed by Sverre as his father, had been slain by his brother Inge Krokrygg in 1155. Sigurd's son Håkon Herdebrei had been chosen to be king by his father's followers. The conflict was now a regional conflict, with King Inge having the strongest support in Viken, while most of Håkon's followers were from Trøndelag. Inge Krokrygg fell in 1161. His party then took the five-year-old Magnus Erlingsson as king. Magnus was the son of Erling Skakke and Kristin, daughter of King Sigurd the Crusader. In 1162, at the Battle of Veøy, Håkon Herdebrei fell and his faction began to fall apart. In 1164 Magnus was crowned by Archbishop Øystein Erlendsson. With the Church and most of the aristocracy on his side, Magnus' kingship seemed secure. Several uprisings followed, but they were all suppressed. Erling Skakke had been regent during his son's minority and continued to be the country's real ruler even after Magnus had come of age.
Sverre meets the Birkebeiners Thus when Sverre came to Norway he found the prospects for a successful uprising to be small. Distraught, he travelled east and came to Östergötland in Sweden just before Christmas. There he met with the local ruler, Birger Brosa, who was married to Sigurd Munn's sister, Brigit Haraldsdotter. Sverre revealed to Birger Brosa his claim to the throne, but Birger was at first unwilling to give any aid. He was already supporting another group, the Birkebeiners — the Birchlegs. This group had risen in 1174 under the leadership of Øystein Møyla who claimed to be the son of King Øystein Haraldsson. They had received the name Birkebeiners because their poverty led some of them to wind the bark of the birch about their legs, instead of wearing shoes. But in January 1177, the Birkebeiners met a crushing defeat at the Battle of Re and Øystein fell. Sverre met with the remnants in Värmland. After some initial doubts, Sverre let himself be persuaded to become the Birkebeiners' next leader.
Rise to power
Upon Sverre's initial contact, the Birkebeiners had been reduced to a ragtag army of brigands and vagabonds with no more than 70 men, according to the saga. Many regard Sverre's achievement of forging them into a force of skilled and professional soldiers as proof of his leadership qualities.
Difficult years During the early years as leader of the Birkebeiners, Sverre and his men were almost constantly on the move. The Birkebeiners were generally viewed as troublemakers with little chance of success by the general populace, who most of all desired peace. Although peasant gatherings were no match for the battle hardened Birkebeiners, Magnus or Erling Skakke frequently had the Birkebeiner on the run.
In June 1177, Sverre first led his men to Trøndelag where Sverre was proclaimed as king at Øretinget. Since this was the traditional place to choose a king, the event carried important symbolic weight. The Birkebeiners then moved south to Hadeland, where they were forced northwards again. Sverre then decided to turn west, attempting to take Bergen by surprise. At Voss, however, the Birkebeiners were ambushed by the local peasants. Although the Birkebeiners were victorious, the surprise element on Bergen was eliminated, forcing the group eastwards again. After almost freezing to death on Sognefjell, they wintered in Østerdal.
The next spring, after a short stay in Viken, Sverre and the Birkebeiners returned to Trøndelag. The Birkebeiners now shifted to a more confrontational strategy. However, an attack on Nidaros ended in defeat at the Battle of Hatthammeren (Slaget på Hatthammeren). After fleeing south, they met Magnus' army in Ringerike, with the skirmish ending in a tactical victory for the Birkebeiners. Encouraged, the Birkebeiners returned to Trøndelag and managed to subdue the region enough to stay in Nidaros during the winter.
In the spring of 1179, Magnus and Erling Skakke attacked Nidaros, forcing another apparent retreat. Confident that the Birkebeiners had again fled southwards, Magnus and his men were complacent. Sverre, however, had turned around at Gauldal and marched again upon the city. The two armies met 19 June in the Battle of Kalvskinnet. Erling Skakke was killed in a battle that ended in a clear victory for Sverre. This victory secured Sverre's hold on Trøndelag.
Victory over the Heklungs
After Sverre's victory at Kalvskinnet, the war changed somewhat in character. The Trønders accepted Sverre as their king; the two sides were now much more equal in power. At some point, Magnus' party acquired the nickname Heklungs (Heklunger). Hekle is Old Norse for hood and is here probably meant to imply the traditional monk garb.
Several battles now followed. Magnus Erlingsson again attacked Trøndelag in the spring of 1180, this time reinforced by conscripts from western Norway. But in the Battle of Ilevollene (Slaget på Ilevollene), just outside Nidaros, the Heklungs were again defeated and Magnus fled to Denmark. With Magnus out of the country, Sverre could sail south and occupy Bergen, but his hold on the region remained weak.
Determined to achieve a decisive victory against the Birkebeiners, Magnus returned with his fleet the next year. The two forces met at sea 31 May 1181 in the Battle of Nordnes. The battle ended in a tactical victory for the Birkebeiners; the Heklungs fled when Magnus was mistakenly believed to have been killed. With his men in poor shape, Sverre decided to withdraw to Trøndelag. Some attempts at negotiation were now made, but these soon broke down. Magnus would not accept Sverre as co-king with equal status, and Sverre could not accept becoming Magnus' vassal.Krag 2005:113–116
With Magnus controlling western Norway from his seat at Bergen, it became problematic for Sverre to keep his men supplied. Sverre therefore led his men south to Viken, a firm Heklung stronghold. He could therefore let his men plunder here with little damage to his cause. However, Magnus exploited Sverre's absence well.Krag 2005:117 In November he raided Trøndelag and managed to seize and burn the Birkebeiner fleet. Sverre had to return or risk losing his one secure foothold.