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

Toggenburg

The family first appears as free lords about 1200, named after the Toggenburg castle near Fischingen in the hills between the Thur and the Murg.

They share in the inheritance of Alt-Rapperswil and other houses, hold the advocacies of the monasteries of St Johann in the Thur valley, Fischingen and Embrach, and are pressed on all sides by St Gall, the bishop of Constance and the Kyburgs. The count's title comes in 1209.

Who he is

Name
Diethelm of Toggenburg (mentioned about 1176 to 1205/07)
Title
Free lord (Edelfreier) of Toggenburg; counts only from 1209
Since
not pinned
Born
not pinned
Family
A second Diethelm (mentioned about 1210 to 1230), perhaps his son, married Guta, possibly of Rapperswil; the brothers Diethelm and Friedrich of the next generation (Friedrich killed by Diethelm in 1226). HLS calls the early genealogy unclear.
Confidence
medium

HLS Toggenburg; de.wikipedia Toggenburger.

Overlord

The king; the abbey of St Gall and the bishop of Constance for fiefs.

What it holds

  • Alt-Toggenburg castle (the later St Iddaburg) above Fischingen
  • The Thur valley (Toggenburg) round Lütisburg, Bütschwil and Wattwil; Neu-Toggenburg castle, built late in the 12th century
  • Wil, a Toggenburg place (lost to St Gall in 1226); whether a town by 1200 is not pinned
  • Advocacies of St Johann im Thurtal, Fischingen and Embrach (lost 1228-1299)
  • Estates in the Zürcher Oberland; a share of the Alt-Rapperswil inheritance

How it was acquired

Inheritance; the Rapperswil share about 1200.

Allies and rivals

Kin of Rapperswil. Rivals: the abbey of St Gall, the bishop of Constance, the Kyburgs.

How things stand that morning

Holds the Toggenburg; allegiance in the throne war not pinned.

Wealth

Upland farms and cattle of the Thur valley; advocacy dues. No figures.

Military

Alt-Toggenburg, Neu-Toggenburg. No numbers.

Threats

  • St Gall's claims on Wil and the lower valley.
  • Kyburg pressure in the Thurgau.

Places of note

  • Alt-Toggenburg castle: Seat

Where the sources disagree

Evidence: HLS marks the dates of the first Diethelm as uncertain.

On the map: The upper valley above Wattwil belonged largely to St Johann abbey, under their advocacy; drawn with the rest.

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. HLS: Toggenburg, von
  2. de.wikipedia: Toggenburger

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