Kruszwica on the north shore of Lake Gopło is the old chief castle of Kuyavia, where the legend of Popiel is set.
The castle on the peninsula was a princely residence in the 10th and 11th centuries; it was burned in 1096 when it sheltered Zbigniew against Władysław Herman and rebuilt in the 12th century, and since the end of the 12th century it has been the seat of a castellan (de.wikipedia). The bishops of Kuyavia sat here until the mid-12th century; the collegiate church of SS Peter and Paul (about 1120-1140) and the castle church of St Vitus stand here. Trade routes from the Oder to Rus' and Lithuania and from Kalisz to Gdańsk cross at Kruszwica, and salt is boiled from the local brine.
In 1200 it is a castle with a market settlement, not a chartered town.
Who holds it
- Name
- Konrad (under his mother Helen's regency); castellan not named for 1200
- Title
- duke, through his castellan
- Since
- 1194
- Born
- about 1187/1188
- Family
- see Masovia and Kuyavia
- Confidence
- medium
Wikipedia (de): Kruszwica; Wikipedia (en): Mieszko III the Old
Lord in 1200
The duke through his castellan of Kruszwica (not named for 1200); Kuyavia is back in Casimir's sons' hands since 1198.
How things stand that morning
Held for Casimir's sons; castellan not named; quiet that winter.
Charter
None in 1200; Magdeburg law in 1422 (de.wikipedia).
Council
None: the castellan and the duke's officers govern the settlement.
Communities
Polish townsfolk; the canons of the collegiate church.
Fairs and markets
Not pinned; a weekly market under the castle by Polish custom.
Militia
The castle levy; the settlement's men serve under the castellan.
Walls and castle
Ducal castle on the Gopło peninsula, rebuilt in the 12th century; the brick castle and the Mouse Tower are 14th-century.
Trade and crafts
Salt boiling, the crossing of long-distance routes, fishing on the Gopło, a regional market.
Where the sources disagree
Evidence: de.wikipedia Kruszwica gives the castle's history, the castellany, the routes and the salt.
Primary sources for Masovia and Kuyavia
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.
- Chronicle of the Poles, by Master Vincent (Wincenty Kadłubek), Wincenty Kadłubek (about 1190 to 1208). Book 4 is a contemporary's account of the fight for the senior throne of Kraków. Read online
- The annals of the Kraków chapter and the other Polish annals (kept from the 11th century; the Kraków chapter annals continued to 1266). Short dated entries that fix the chronology Kadłubek blurs: the deaths of dukes and bishops, Mieszko the Old's captures of Kraków, Prussian raids on Masovia, church consecrations. Read online
Sources and studies
Last revised 4 November 2026. Published 4 November 2026. Suggest a correction on the OMNIA Discord.