Officers: prévôtés, bailiwicks, seneschals · Duchy of Kraków (the senior throne) · as at first light, 1 January 1200

Sieradz land

The Sieradz land on the middle Warta, between the Kalisz land of Greater Poland and the Łęczyca land, was part of the senior province of Kraków under Bolesław III's testament and stayed with it: it follows whoever holds Kraków, and becomes a duchy of its own only in 1263.

Its castle at Sieradz, named in the Gniezno bull of 1136, is a castellan's seat with a market settlement. If Mieszko III holds Kraków on 1 January 1200, as the usual reckoning has it, the Sieradz castellan answers to him as senior, not as duke of Greater Poland. The Ruda (Wieluń) castellany to the south, whose attachment to Sieradz or to the Kalisz land in 1200 is not pinned, is left undrawn.

Who he is

Name
Not named in any charter of 1199-1200 we could reach (not pinned)
Title
Castellan of Sieradz (kasztelan sieradzki) for the senior duke
Since
not pinned
Born
not known
Family
not known
Confidence
low

Seniorate membership from en.wikipedia (Sieradz); the overlord follows the Kraków question.

Overlord

The senior duke in Kraków: Mieszko III on the usual reckoning, Leszek's regents on the other (see the krakow record)

What it holds

  • Sieradz castle and district on the Warta
  • The roads from Kalisz to Łęczyca and Kraków across the Warta

How it was acquired

Part of the senior province (with Łęczyca it was the dower of Bolesław III's widow Salome until 1144); Casimir II took it with Kraków in 1177 and held it until 1194; since then it has followed whoever holds Kraków.

Allies and rivals

The senior duke; the neighbouring Łęczyca land (maz) and the Kalisz land (Greater Poland).

How things stand that morning

Senior-province ground: realm krakow. Its castellan is not named. Not Greater Poland's own land; the assignment's question whether it is Mieszko's that winter is answered: only as senior, if he holds Kraków.

Wealth

The ducal dues of the Warta valley villages; the Warta crossing.

Military

The castle garrison and the knights of the district.

Threats

  • Changes of master with every turn in the struggle for Kraków

Where the sources disagree

  • Coordinate with mlp (krakow) and maz (Łęczyca): neither assignment names the Sieradz land, so we draw it here under the realm krakow.

Evidence: Membership of the senior province is clear in outline; the holder in 1200 depends on the Kraków question and the castellan is not named.

On the map: Drawn round Sieradz from the Prosna side to the Łęczyca border; the Wieluń country is left out.

Primary sources for Kraków (Mieszko III)

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. Sieradz, en.wikipedia
  2. Leszek the White, en.wikipedia
  3. List of Polish monarchs (dukes of Kraków), en.wikipedia
  4. Casimir II the Just, en.wikipedia (Kraków taken in 1177 including the districts of Sieradz and Łęczyca)

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