Barons and castellans · Prince-bishopric of Utrecht · as at first light, 1 January 1200

Amstel

The bishop's unfree knights (ministeriales) who have made the peat lands along the Amstel their own, at the edge of Holland.

They hold the Amstelland from the bishop and are his frontier men toward Holland and the IJ. In 1203 Gijsbrecht of Amstel will side with Ada and Louis of Loon, as the bishop does.

Who he is

Name
Not pinned: Gijsbrecht (Gijsbert II) of Amstel is named on Ada's and Louis's side in 1203
Title
Lord of Amstel
Since
Not pinned
Born
Not pinned
Family
A house of the bishop of Utrecht's ministeriales.
Confidence
low

Not pinned for 1200.

Overlord

The bishop of Utrecht

What it holds

  • The Amstelland: Ouderkerk, Amstelveen and the peat lands along the Amstel down to the IJ
  • Mijdrecht and the peat lands toward the Vecht (not pinned in detail)

How it was acquired

Utrecht fiefs held by a ministerial house.

Allies and rivals

The bishop's men; rivals of the Holland nobility along the frontier.

How things stand that morning

Holds under the bishop.

Wealth

Peat reclamation and cattle; fishing on the IJ.

Military

No castle pinned for 1200. No numbers are recorded.

Where the sources disagree

Evidence: Known from 1203 in the sources consulted.

On the map: Rough.

Primary sources for Utrecht

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 Egmond (12th century to about 1205). The house annals of Egmond, the counts of Holland's abbey, and the main native source for Holland around 1200. Read online
  • Chronicle of the abbots of Wittewierum (Bloemhof), Emo of Wittewierum (from 1219 to 1237, continued by Menko to 1273). The chronicle opens only in 1204 with the founding of Emo's Premonstratensian house in the Groningen Ommelanden, so it has nothing for 1200 itself. Read online

Sources and studies

  1. Loon War (en.wikipedia)

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