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

Regensberg

A rich free family north-west of Zürich with estates across the Zürichgau, the Thurgau, the Klettgau and much of the Aargau.

Their castle is Alt-Regensberg by Regensdorf (the hill-town of Neu-Regensberg is of about 1245). They are advocates of the nunnery of Fahr, and Lütold IV will found the Premonstratensian abbey of Rüti about 1206.

Who he is

Name
Lütold IV
Title
Free lord (Edelfreier) of Regensberg; probably the first to call himself count, early in the 13th century
Since
not pinned
Born
about 1140
Family
Son of Lütold III and Judenta, founders of Fahr (1130). Eberhard of Regensberg, probably his son, is elect of Brixen and is named among Philip's princes at Speyer (28 May 1199); he will be archbishop of Salzburg. Lütold dies at Acre on 16 November 1218 on the Fifth Crusade.
Confidence
medium

de.wikipedia Regensberg (Adelsgeschlecht); de.wikipedia Speyerer Fürstenerklärung.

Overlord

The king.

What it holds

  • Alt-Regensberg castle by Regensdorf, strengthened by Lütold IV
  • The advocacy of Fahr nunnery on the Limmat
  • Estates in the Zürichgau, the Thurgau, the Klettgau and the Aargau

How it was acquired

Inheritance.

Allies and rivals

Kin with the Toggenburg, Kyburg, Rapperswil and Krenkingen (similar arms). Later enemies of Zürich and Habsburg (1267-1268).

How things stand that morning

Holds his lands in peace. Leans Staufen through his son Eberhard, Philip's man at Speyer: allegiance Staufen, low to medium confidence.

Wealth

Wide estates; no figures.

Military

Alt-Regensberg. No numbers.

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.

  1. about 1206 (later)Lütold founds Rüti abbey.Depends on: Peace. Stopped by: War.

Places of note

  • Alt-Regensberg castle: Seat

Where the sources disagree

Evidence: Lütold IV well attested; the extent of his lands is only described in general terms.

On the map: Only the core round the castle is drawn; the scattered estates are not.

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. de.wikipedia: Regensberg (Adelsgeschlecht)

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