Hartbert van Bierum (died 12 November 1150) was a bishop of Utrecht from 1139 to 1150.
Hartbert, or Heribert, in several translations, was consecrated as bishop on 24 July 1139. During his rule, a rebellion occurred in the city of Groningen. After the bishop had put down the rebellion, he made an agreement with the city in which the city was not allowed to build a wall around itself - an agreement which was not kept for long.
The bishop loaned the prefecture of Groningen to his brother Ludolf, and his younger brother Leffart was given the castle of Coevorden in the south-east of Drenthe, which held control over the only road through the Bourtangerbog from Drenthe to Germany. This nepotism formed the basis of the eventual loss of Drenthe for the Bishopric of Utrecht.
The Union of Utrecht was a treaty signed on 23 January 1579 in Utrecht, Netherlands, unifying the northern provinces of the Netherlands, until then under the control of Habsburg Spain.
Drenthe is a province of the Netherlands located in the northeastern part of the country. It is bordered by Overijssel to the south, Friesland to the west, Groningen to the north, and the German state of Lower Saxony to the east. As of November 2019, Drenthe had a population of 493,449 and a total area of 2,680 km2 (1,030 sq mi).
The Bishopric of Utrecht was an ecclesiastical principality of the Holy Roman Empire in the Low Countries, in the present-day Netherlands. From 1024 to 1528, as one of the prince-bishoprics of the Holy Roman Empire, it was ruled by the bishops of Utrecht. The Prince-Bishopric of Utrecht must not be confused with the Diocese of Utrecht, which extended beyond the Prince-Bishopric and over which the bishop exercised spiritual authority.
The Seventeen Provinces were the Imperial states of the Habsburg Netherlands in the 16th century. They roughly covered the Low Countries, i.e., what is now the Netherlands, Belgium, Luxembourg, and most of the French departments of Nord and Pas-de-Calais (Artois). Also within this area were semi-independent fiefdoms, mainly ecclesiastical ones, such as Liège, Cambrai and Stavelot-Malmedy.
Otto of Lippe was a son of Bernhard II, Lord of Lippe. He was bishop of Utrecht as Otto II from 1216 to 1227. Several of his brothers also held high ecclesiastical offices in the Rhineland. He likely participated in the foundation of the Teutonic Order.
The Friso-Hollandic Wars, also called Frisian-Hollandic Wars, were a series of short medieval wars consisting of the attempts made by the counts of Holland to conquer the free Frisian territories, which lay to the north and east of their domain. These wars were waged off and on from 1256 to 1297, 1324 to 1348, 1396 to 1411, and from 1421 to 1422, although it could be argued that a state of war continued to exist between the County of Holland and the Frisian territories till well after the year 1500.
The Guelders Wars were a series of conflicts in the Low Countries between the Duke of Burgundy, who controlled Holland, Flanders, Brabant, and Hainaut on the one side, and Charles, Duke of Guelders, who controlled Guelders, Groningen, and Frisia on the other side.
The Drenther Crusade was a military campaign launched against the inhabitants of Drenthe with the approval of the Papacy in 1228 and lasting until 1232. It was led by Willibrand, Bishop of Utrecht, commanding an army composed mostly of Frisian crusaders.
The Battle of Ane, was fought in 1227 between Otto II of Lippe, Bishop of Utrecht, and Rudolf II van Coevorden with his army of Drenths. The account of the battle comes from Quedam narracio de Groninghe de Trentis de Covordia et diversis aliis sub episcopis traiectensibus, a manuscript from the early 13th century.
The Diocese of Groningen-Leeuwarden is a suffragan Latin diocese of the Catholic Church in the northern part of the ecclesiastical province of the Metropolitan Roman Catholic Archdiocese of Utrecht. It encompasses the provinces of Groningen, Friesland and Drenthe, as well as the Noordoostpolder, a part of the province of Flevoland.
Frisian freedom was the absence of feudalism and serfdom in Frisia, the area that was originally inhabited by the Frisians. Historical Frisia included the modern provinces of Friesland and Groningen, and the area of West Friesland, in the Netherlands, and East Friesland in Germany. During the period of Frisian freedom the area did not have a sovereign lord who owned and administered the land. The freedom of the Frisians developed in the context of ongoing disputes over the rights of local nobility.
Hartbert was bishop of Utrecht from 1139 to 1150.
The Semslinie is a part of the border between the Dutch provinces of Groningen and Drenthe that runs right through the former Bourtanger Moor. The almost straight line runs from Wolfsbarge to the Huis ter Haar at Musselkanaal. The border is slightly bent at Stadskanaal. The slightly bent line between Musselkanaal and Stadskanaal is sometimes called Koningsraai. The Semslinie is named after Johan Sems.
The County of Drenthe, was a province of the Holy Roman Empire from 1046, and of the Dutch Republic from 1581 until 1795. It corresponds to the area west of the lower Ems, today the eponymous province of Drenthe in the Netherlands.
The historic Archdiocese of Utrecht (695–1580) was a Roman Catholic diocese and archdiocese in the Low Countries before and during the Protestant Reformation.
Netherlands–Spain relations are the bilateral and diplomatic relations between these two countries. The relations between both countries are defined mainly by their membership in the European Union and by being allies in the NATO, as well as belonging to numerous International Organizations.
Quaedam narracio de Groninghe, de Thrente, de Covordia et de diversis aliis sub diversis episcopis Traiectensibus, usually just Quaedam narracio for short, is an anonymous Latin prose chronicle written in 1232–33 by a Frisian clergyman attached to Bishop Willibrand of Utrecht. It was written during the Drenther uprising of 1227–1232.
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