Niels Estridsen:
King in Denmark between 1104-1134. Born in 1065, dies in 1134. He's the last of Svend Estridsens sons to become king in Denmark. Most known for his and his son Magnus's revolt against the claim of Knud Lavard and Erik Emune(Erik the meorable). He was married with the swedish kings daughter Margrethe Fredkulla, with her he had the son Magnus, after her death he married Ulvhild, the daughter of a wealty Norwegian Stormand/Yeoman. After the death of Erik 1 of Denmark in 1103, Niels Estridsen was elected king, instead of Eriks son Harald Kesja.
Niels reigned together with his queen Margrethe, but evidence suggest that it was probably the queen that held the kingdom together, despite the intense rivalry. Niels was off a far too lax and forgiving nature. The chronicle of Roskilde depicts him as a mild character, straight to the point, but not suitable as a regent for an entire kingdom.
Niels had a rather splendid teamwork with the Danish church. He paid huge sums to the monastery of Skt. Knud in Odense, and it is rather important that Niels was the first Danish king to declare to be king of god's grace. For the first time in Danish history we hear of a king that lay claims on that property which no one owns - "Danefć" - It was the property a man or woman would leave behind if no direct heirs was found, this would now go to the king directly. He also changed the look of the coins and depicted himself as the protector of commence and harbors in the kingdom.
Niels reestablished the royal authority in and around the kingdom. The whole royal administration was reorganized by his will. The use of officials was introduced, in every region or major city Niels would have officials that answered to him only. They would collect fees, taxes and other debts. He avoided internal disputes by granting important titles to family members around the entire kingdom, this helped to spread his authority too of course. To mention a few of these, his kin Erik would manage the defense of Lolland-Falster, his nephew Knud Lavard was granted the position of royal prefect in Schleswig where he would defend the southern border from attacks, this would later prove to be a fatal error on Niels's account as Knud became very popular in this region.
In foreign matters the struggle against the Danish enemies to the south was rather important. In 1120 he forged a military alliance with Poland in an attempt to defeat these enemies near the border. In Sweden his son Magnus gained the royal rights to Götaland because of his mother's family line.
At the end of Niels's reign the continued rivalries between family members intensified. His queen died around 1128/29 and because of Niels's age this led to the question of the succession. Niels's son Magnus was afraid that Knud Lavard would be preferred to succeed as king after the death of Niels. Knud Lavard had shown himself to be a rather successful leader in both wartime and peacetime, to add to this he was also the vassal of the German king. As Magnus decided that Knud had become too powerful, he lured him out in the forest of Haraldsted and killed him on the 7th of January 1131.
This led to a revolt from several powerful Stormćnd/Yeomen in Denmark. The revolt was joined by Erik Emune, the half brother to the murdered Knud Lavard. In 1131 he was crowned to be the rightful king of Denmark and a succession war begun. He gained the support from the German king Lothar. Lothar advanced to the Danish border at Dannevirke, but here Niels was successful in bribing Lothar to stay out of the war. In 1134 Magnus made an "Lensed"/oath to Lothar, which was now emperor. For acknowledging the bishop in Hamburg-Bremsen as the head of the Danish chruch, Magnus was crowned as the rightful king of Denmark.
This resulted in the Danish church, at the head was Asser Lund, archbishop, supported Erik Emune in the conflict and in 1134 a battle was fought in Skĺne between the two sides. Magnus was killed at the battle of Fodevig, and Niels fled to Schleswig. Here he was approached by locals from Schleswig at the 25th of June, and confronted with the murder of Knud Lavard, they took their revenge on Niels by killing him, and his reign was ended.