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

Oberstein

A family of the middle Nahe whose first seat was a cave castle in the cliff where the Felsenkirche now stands, with a new castle (Burg Stein, later called Bosselstein) built on the rock above it shortly before 1200.

In 1197 the brothers Eberhard and Werner de Petra handed Burg Stein to Archbishop John I of Trier and took it back as a fief, so on 1 January 1200 they are newly Trier's men.

Who he is

Name
Eberhard and Werner de Petra (vom Stein), brothers
Title
Lords of Stein (de Petra)
Since
named together in 1197
Family
The lords of Stein, later called of Oberstein; Eberhard's grandson Eberhard married Juliane, heiress of Wirich of Daun, about 1245
Confidence
medium

de.wikipedia, Oberstein (Adelsgeschlecht)

Overlord

John I, archbishop of Trier, since 1197

What it holds

  • Burg Stein (later Bosselstein) on the rock above the Nahe, built shortly before 1200; a Trier fief since 1197
  • The older cave castle below it
  • The Nahe valley villages round Oberstein and Idar (extent not pinned)

How it was acquired

Family seat; made a fief of Trier in 1197.

Allies and rivals

Neighbours: the Wildgraves at Kirn and the Schmidtburg, the counts of Veldenz on the Glan, the counts of Sponheim.

How things stand that morning

In possession as vassals of Trier since 1197. Their own act in the throne war is not recorded.

Wealth

A Nahe crossing and the valley land below the castles.

Military

Two castles in the cliff above the Nahe; no vassals or numbers recorded.

Threats

  • Trier tightening its hold on its new fief
  • The Wildgraves and Sponheim pressing into the Hunsrück

Places of note

  • Burg Stein (Bosselstein): castle built shortly before 1200, a Trier fief since 1197

Where the sources disagree

Evidence: The 1197 fief and the castle's date are documented; the lordship's extent is not.

On the map: A small block round the castle; the family's rights further out are not pinned.

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. de.wikipedia: Oberstein (Adelsgeschlecht) (Burg Stein a Trier fief in 1197)
  2. de.wikipedia: Speyerer Fürstenerklärung (signatories of 28 May 1199)

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