Counts · Duchy of Austria · as at first light, 1 January 1200

Clam (Machland)

The Machland is the strip of Danube plain and hills east of the Aist below the Bohemian forest.

Clam castle (first recorded in 1142, when it belonged to Walchun of Machland) passed through his heiress Adelheid to the counts of Velburg. When Ulrich of Clam-Velburg dies on crusade in 1217 the castle, with Klingenberg, falls to the duke, and the Machland is joined to the duke's land in 1218.

Who he is

Name
Ulrich of Clam-Velburg (dies 1217 on the Damietta crusade); whether he or a predecessor holds on 1 January 1200 is not pinned
Title
Counts of Velburg and Clam (Clam-Velburg line)
Since
Clam came to the Velburgs through Adelheid, heiress of Walchun of Machland, brother of Otto of Machland
Born
not pinned
Family
The Velburgs are a Bavarian Nordgau comital house (Velburg is bav's ground); the Clam line holds the inheritance of the lords of Perg and Machland's Walchun branch. Their Machland kin founded the abbeys of Baumgartenberg (Cistercian, 1141) and Waldhausen (Augustinian canons, 1147).
Confidence
low

de.wikipedia Burg Clam; de.wikipedia Riedmark (Machland lands transferred to the duke in 1218).

Overlord

Duke Leopold VI of Austria

What it holds

  • Clam castle (two castles at Clam are named about 1150)
  • Klingenberg castle
  • The Machland plain round Saxen, Baumgartenberg and Mitterkirchen (extent not pinned)

How it was acquired

Inheritance through Adelheid of Machland.

Allies and rivals

Neighbours of the duke's Riedmark and Perg lands to the west.

How things stand that morning

Held by the Clam-Velburg counts on 1 January 1200 (holder's name not pinned for that year).

Wealth

Danube plain farms, forest clearing towards Bohemia, the Danube passage by the Strudel rapids at Grein.

Military

Clam and Klingenberg castles.

Places of note

  • Clam castle: Recorded 1142

Where the sources disagree

Evidence: Transfer dates known; the 1200 holder and extent are not.

On the map: Approximate extent.

Primary sources for Austria

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. Burg Clam, de.wikipedia
  2. Riedmark, de.wikipedia

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