Northeastern Marches
At the beginning of his rule as king of Germany, Otto I tried to reorganize his realm to prepare an expansion to the East. At the beginning of the year 937, he created two marches: the March of the Billungen, given to Hermann Billung, later Duke of Saxony; and the Eastern march, given to Gero. In 961, when Billung became Duke of Saxony, his March was merged with the duchy. In the case of Gero, Otto I, now emperor, decided the division of his territories, greatly expanded since 937.
- March of Billung (937-961): Carved from the Duchy of Saxony, then merged back.
- 937-961: Hermann Billung
- March of Gero, sometimes called Nordmark or Ostmark (937-965): Carved from the Duchy of Saxony, then divided in five marches.
- 937-965: Gero
- Nordmark, later known as March of Brandenburg (from 965): Carved from the March of Gero.
- 965-985: Dietrich von Haldensleben
- 985-1003: Lothar I of Walbeck
- Ostmark, sometime confused with Nordmark, later known as Lusatia (from 965): Carved from the March of Gero.
- 965-979: Thietmar I
- 979-993: Hodo I
- 993-1015: Gero II
- Meissen, also called March of Thuringia (from 965): Carved from the March of Gero.
- 965-979: Wigbert
- 979-985: Rikdag
- 985-1002: Ekkehard I
- Merseburg (965-982): Carved from the March of Gero, annexed to Meissen.
- 965-982: Günther
- Zeitz (965-979): Carved from the March of Gero, annexed to Meissen.
- 965-979: Wigger I
- March of Moravia (1182-1918): Created by Frederick I, Holy Roman Emperor.
Read more about this topic: List Of Marches