Ostfriesland County: All Data
This page is about the data available for this polity; the chronology of its events is available here.
Was a county, and later a principality, of the Holy Roman Empire, located in Frisia.
1. Genealogy
2. Maps of Political Control Over Time
Ostfriesland County : Map showing the initial year each territory was ruled by the polity
Ostfriesland County : Maximal Extension of the Polity
3. Monthly Summaries
4. Time Series
Ostfriesland County : Time Series of all Territorial Changes
Ostfriesland County : time series of its population and area throughout history
