Town · County of Holstein · as at first light, 1 January 1200

Rendsburg (the Reinoldsburg)

Castle on the island in the Eider, first named as Reinoldesburch in 1199 by Arnold of Lübeck and rebuilt by Adolf III against the Danes; attacked by Duke Valdemar in 1199.

A settlement grew there from about 1150; town charter 1253.

Who holds it

Name
Count Adolf III
Title
lord
Confidence
medium

Lord in 1200

Count Adolf III

How things stand that morning

Holstein's frontier castle, under threat; handed to Canute VI during 1200 (month not pinned).

Charter

None in 1200.

Walls and castle

Castle on the Eider island.

Where the sources disagree

Evidence: Town status dates from the general literature; not checked against charters.

Primary sources for Holstein

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. Wikipedia (de): Rendsburg
  2. KuLaDig: Burg Rendsburg
  3. Wikipedia: Canute VI of Denmark
  4. NDB (Maybaum 1953) and ADB (Jansen 1875): Adolf III., Graf von Holstein

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