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.
- 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.
- Annals of Marbach (compiled to 1238, the section on 1198 to 1210 written in the early 13th century). Alsatian annals on the Staufen side of the Upper Rhine. Read online
- Annals of Reiner of Saint James, Liège, Reiner of Liège (1197 to 1230, kept year by year). Contemporary annals kept inside Liège. Read online
- Chronicle of Burchard of Ursberg, Burchard of Ursberg (about 1229 to 1230, reworked by Conrad of Lichtenau). Written a generation later by a fierce partisan of the Staufen and a critic of Innocent III. Read online
- Chronicle of Otto of St Blasien, Otto of St Blasien (about 1209 to 1210). A Swabian continuation of Otto of Freising written from the Staufen side. Read online
- Chronicle of Reinhardsbrunn; Chronicle of St Peter's, Erfurt (Erfurt chronicle in the 13th century; Reinhardsbrunn compilation about 1340 to 1349 from older annals). The two Thuringian chronicles. Read online
- Chronicle of the Slavs, by Arnold of Lübeck, Arnold of Lübeck (about 1209 to 1210). Arnold continues Helmold and writes from Lübeck, close to Danish, Welf and Baltic affairs. Read online
- Royal Chronicle of Cologne (in stages from about 1175 to about 1250; the section on 1198 to 1220 written soon after the events). The fullest German narrative of the throne war from the Welf and Cologne side. Read online
- Chronicle of Hainaut, Gislebert of Mons (about 1195 to 1196). Ends in 1195, so it has no 1200 entries, but it is the indispensable background for Flanders and Hainaut: the career of Count Baldwin V of Hainaut (VIII of Flanders), his union of the two counties, the settlement with Philip over Artois, the rights, castles, fiefs and vassals of Hainaut listed by a man who ran its chancery, and the youth of Baldwin IX, who held both counties in 1200. Read online
8 more in the sources library for The Rhineland, the Low Countries and the Swiss Lands.
Sources and studies
Last revised 4 November 2026. Published 4 November 2026. Suggest a correction on the OMNIA Discord.