Barons and castellans · Other imperial lands · as at first light, 1 January 1200

Horstmar

A free lordship round Horstmar castle in the north-western Münsterland, held by a crusading lord who will become one of Otto's best-known knights.

The bishops of Münster buy it only in 1269.

Who he is

Name
Bernhard 'the Good'
Title
Lord (Edelherr) of Horstmar
Since
about 1170 (his dates as lord are given as 1170-1227)
Born
not pinned
Family
Edelherren von Horstmar, probably a branch of the house of Holte, first documented in 1092 as vassals of the counts of Cappenberg. His nephew Otto succeeds him in 1227.
Confidence
medium

A crusader and the most famous of his house. Later he is one of Otto IV's leading knights (he fights for Otto at Bouvines in 1214, which the town article does not mention). Where he is on 1 January 1200 is not pinned.

Overlord

Free lords; earlier vassals of the Cappenberg counts.

What it holds

  • Horstmar castle and its lordship

How it was acquired

Family lands.

Allies and rivals

Neighbours: Steinfurt, the bishop of Münster.

How things stand that morning

Holds Horstmar; his throne-war stance in 1200 is not pinned, though his later service to Otto makes a Welf leaning likely.

Wealth

Manors.

Military

Castle; his own crusading reputation.

Threats

  • The bishop of Münster

Places of note

  • Horstmar castle: Seat of the lords of Horstmar.

Where the sources disagree

Evidence: Dates from the town article; his Otto service is from general knowledge of the battle of Bouvines, not checked here.

On the map: Castle district only.

Primary sources for Empire

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.

8 more in the sources library for The Rhineland, the Low Countries and the Swiss Lands.

Sources and studies

  1. Horstmar, de.wikipedia

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