The Brehna line of the Wettins holds the old county round Brehna between the Mulde and the Saale, where a castle stood before 1053 and a house of Augustinian canonesses (Kloster Brehna) is the family's burial church, and further east the lands on the Black Elster round Herzberg, Schlieben and Löben, where the brothers moved their main seat after 1181.
The two brothers back Philip.
Who he is
- Name
- Otto I (elder, died 23 December 1203) and his brother Frederick II (died 16 October 1221), ruling together
- Title
- Counts of Brehna
- Since
- 1182 (after their father Frederick I, son of Conrad the Great)
- Born
- not pinned
- Family
- Wettin. Frederick II married Judith (died 6 October 1220); four children, among them Otto II and Dietrich I, later counts (birth years not pinned).
- Confidence
- medium
de.wikipedia Grafschaft Brehna
Overlord
The king
What it holds
- Brehna castle and Kloster Brehna (canonesses), burial place of the counts
- Herzberg on the Black Elster, the main seat after 1181
- Schlieben and Löben, where the brothers stayed
- Zörbig and the villages between Brehna and the Mulde (not pinned)
How it was acquired
From their father Frederick I, who received Brehna in Conrad the Great's division of 1156.
Allies and rivals
The Wettin cousins; the Ascanians at Wittenberg to the north.
How things stand that morning
Hold Brehna and the Herzberg lands; the de.wikipedia account puts them on Philip's side in the throne war.
Wealth
Farmland round Brehna; forest and marsh on the Black Elster.
Military
Castles at Brehna, Herzberg and Schlieben. No numbers.
Threats
- Ascanian expansion from Wittenberg
Places of note
- Brehna: Castle and family nunnery
- Herzberg: Main seat after 1181
Where the sources disagree
- The Brehna article also lists Camburg among the family's seats; we draw Camburg with the margrave of Meissen (see Margrave Dietrich).
Evidence: One article; the brothers' joint rule and dates are clear, their lands round 1200 less so.
On the map: Schematic.
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.
- Annals of Marbach (compiled to 1238, the section on 1198 to 1210 written in the early 13th century). Alsatian annals on the Staufen side of the Upper Rhine. Read online
- Annals of Reiner of Saint James, Liège, Reiner of Liège (1197 to 1230, kept year by year). Contemporary annals kept inside Liège. Read online
- Chronicle of Burchard of Ursberg, Burchard of Ursberg (about 1229 to 1230, reworked by Conrad of Lichtenau). Written a generation later by a fierce partisan of the Staufen and a critic of Innocent III. Read online
- Chronicle of Otto of St Blasien, Otto of St Blasien (about 1209 to 1210). A Swabian continuation of Otto of Freising written from the Staufen side. Read online
- Chronicle of Reinhardsbrunn; Chronicle of St Peter's, Erfurt (Erfurt chronicle in the 13th century; Reinhardsbrunn compilation about 1340 to 1349 from older annals). The two Thuringian chronicles. Read online
- Chronicle of the Slavs, by Arnold of Lübeck, Arnold of Lübeck (about 1209 to 1210). Arnold continues Helmold and writes from Lübeck, close to Danish, Welf and Baltic affairs. Read online
- Royal Chronicle of Cologne (in stages from about 1175 to about 1250; the section on 1198 to 1220 written soon after the events). The fullest German narrative of the throne war from the Welf and Cologne side. Read online
- Chronicle of Hainaut, Gislebert of Mons (about 1195 to 1196). Ends in 1195, so it has no 1200 entries, but it is the indispensable background for Flanders and Hainaut: the career of Count Baldwin V of Hainaut (VIII of Flanders), his union of the two counties, the settlement with Philip over Artois, the rights, castles, fiefs and vassals of Hainaut listed by a man who ran its chancery, and the youth of Baldwin IX, who held both counties in 1200. Read online
8 more in the sources library for The Rhineland, the Low Countries and the Swiss Lands.
Sources and studies
Last revised 4 November 2026. Published 4 November 2026. Suggest a correction on the OMNIA Discord.