Otto III (1215-1267)

"Otto III, nicknamed the pious (1215 – 9 October 1267 in Brandenburg an der Havel) was Margrave of Brandenburg jointly with his elder brother John I until John died in 1266. Otto III then ruled alone, until his death, the following year.

The reign of these two Ascanian Margraves was characterized by an expansion of the Margraviate, which annexed the remaining parts of Teltow and Barnim, the Uckermark, the Lordship of Stargard, the Lubusz Land and parts of the Neumark east of the Oder. They consolidated the position of Brandenburg within the Holy Roman Empire, which was reflected in the fact that in 1256, Otto III was a candidate to be elected King of the Germans. They founded several cities and developed the twin cities of Cölln and Berlin. They expanded the Ascanian castle in nearby Spandau and made it their preferred residence." - ( 06.04.2020)

What we know


official Margrave Brandenburg (State)
died Brandenburg an der Havel 09.10.1267
was buried Strausberg
Member Askanier
son of Albert II, Margrave of Brandenburg (1171-1220)
brother of John I, Margrave of Brandenburg (1213-1266)
father of Otto V, Margrave of Brandenburg-Salzwedel (1246-1298)
father of Albert III, Margrave of Brandenburg-Salzwedel (1250-1300)

Sources & Mentions

Objects and visualizations



Brandenburg (State)13.00805568695152.361946105957place of actiondb_images_gestaltung/generalsvg/place-biog.svg0.0622
Brandenburg an der Havel12.55611133575452.411666870117Place of deathdb_images_gestaltung/generalsvg/place-biog.svg0.07522
Strausberg13.88138866424652.580833435059Burial placedb_images_gestaltung/generalsvg/place-biog.svg0.0622

Relations to time periods

Show relations to time periods