Prince-bishopric · The Rhineland, the Low Countries and the Swiss Lands · as at first light, 1 January 1200

Bishopric of Halberstadt

The bishopric of Halberstadt is the old mother church of eastern Saxony, stretching from the Oker to the Saale, but its temporal lordship is small and scarred.

In 1179 Henry the Lion's men stormed and burned Halberstadt and carried off its bishop; the see has spent twenty years rebuilding. Its diocese includes Brunswick east of the Oker, so the bishop is the Welf heartland's own diocesan and its nearest Staufen enemy at once. Gardolf is one of Philip's Saxon bishops and was at the Magdeburg Christmas court of 1199; the chronicle of his see (the Gesta episcoporum Halberstadensium, written about 1209) is a main source for these years.

Who rules

Name
Gardolf (called Gardolf or Berthold of Harbke in some lists)
Title
Bishop of Halberstadt
Since
1193 (successor of Dietrich of Krosigk, 1181-1193)
Born
not pinned
Family
Said to be of the Harbke family (Harbke lies near Helmstedt); not pinned
Confidence
medium

Tenure from de.wikipedia (Liste der Bischöfe von Halberstadt); his side and his presence at the Magdeburg Christmas from the campaign notes, whose source is the Gesta episcoporum Halberstadensium (its author was at the court). No biography could be reached.

Overlord

The king; he recognises Philip.

What the realm holds

  • Halberstadt, the cathedral city (rebuilt after 1179)
  • Osterwieck (the original seat of the see, Seligenstadt), with its market
  • Hornburg on the Oker frontier facing the Welf lands
  • Gröningen (castle destroyed by Henry the Lion in 1180-81), Wegeleben, Schwanebeck, Kroppenstedt and Oschersleben (episcopal holdings; their state in 1200 not pinned)
  • Langenstein
  • Tithes and churches across a diocese from the Oker to the Saale

Allies and rivals

Allies: Philip, Archbishop Ludolf of Magdeburg, Bernhard of Saxony. Rivals: the Welfs; Brunswick lies partly in his diocese, and Welf raids come over the Oker.

The realm that morning

Gardolf backs Philip and attended his Christmas court at Magdeburg. Halberstadt's frontier with the Welf lands runs along the Oker and the Grosses Bruch (Hornburg facing Wolfenbüttel and the Asse). No attack on Halberstadt's own lands is pinned for the winter of 1199-1200, but the war is close: at the turn of the year Philip's and Magdeburg's men destroyed Helmstedt and Warberg, a few miles from Harbke, the place Gardolf's family is named from; the ADB records a devastation of Halberstadt territory in 1203.

Wealth

Tithes, the market and mint of Halberstadt, the Osterwieck market, rents of the Harz foreland.

Military

The bishop's ministeriales and vassal counts; Hornburg and Halberstadt's rebuilt defences. No figures.

Threats

  • Welf raids across the Oker
  • The cost of rebuilding after 1179
  • Papal pressure on Staufen bishops

Officers and vassals

The cathedral chapter (one of Bernhard of Saxony's sons, John, is a provost at Halberstadt). Vassal counts and lords who hold Halberstadt fiefs: Mansfeld (Eisleben becomes a Halberstadt fief in the 13th century), Regenstein and Blankenburg, Wernigerode, Falkenstein (not pinned for 1200). The see's high advocate (Hochvogt) and chief ministeriales that winter are not pinned.

Relations with rome

As Philip's bishop he is on the wrong side of the pope's growing preference for Otto; no sentence on him is pinned for 1200.

What the year holds

What happened next, if nothing in play changes it. Each event carries what it depends on and what would stop it.

In 1200

  1. 21 August 1200Halberstadt's vassals likely join Philip's attack on Brunswick (it fails on 21 August).Depends on: Philip's campaign. Stopped by: A truce.

Later, on the likely course

  1. 1201 (often given as 21 September; day not verified in the sources reached)Gardolf dies; Conrad of Krosigk succeeds (1201-1209) and goes on crusade.Depends on: Natural death. Stopped by: Nothing likely.
  2. 1203 (not yet)Halberstadt territory devastated in the Welf counter-attack.Depends on: Hermann of Thuringia and Ottokar turning to Otto. Stopped by: Philip's continued hold on Saxony.

Where the sources disagree

Evidence: Gardolf's tenure and side are known; his family, officers, castles and acts in 1199-1200 could not be pinned from the sources reached (the Halberstadt charter book was not reachable).

On the map: Drawn from the later Halberstadt Hochstift core; the bishop's actual holdings in 1200 were patchier.

Primary sources for this realm

Chronicles, registers, sagas and inscriptions written in or near 1200 that cover this entry. Each has its own page with editions, translations and where to read it.

Sources and studies

  1. Liste der Bischöfe von Halberstadt, de.wikipedia
  2. Hochstift Halberstadt, de.wikipedia
  3. E. Winkelmann, Philipp von Schwaben, ADB 26 (1887), via Deutsche Biographie

Last revised 4 November 2026. Published 4 November 2026. Suggest a correction on the OMNIA Discord.