County of East Frisia

County of East Frisia Grafschaft Ostfriesland (German) Graafschap Oost-Friesland (Dutch) Gróófskup Oostfräisland (East Frisian Low Saxon) Groafskup Aastfräislound (Saterland Frisian)
1464–1744
Coat of arms Coat of arms
East Frisia around 1600, by Ubbo Emmius
Status	County (state of the Holy Roman Empire)
Capital	Emden (1464–1539) Aurich (1539–1744)
Common languages	East Frisian (until the 17th century) East Frisian Low Saxon (from the 16th century) Dutch German
Religion	Major: Catholicism (until 1528), Lutheranism (in the east), Calvinism (in the west) Minor: Catholicism (from 1528), Anabaptism, Judaism
Demonym(s)	East Frisians
Government	Feudal monarchy
Counts and Princes of East Frisia
• 1464–1466	Ulrich I (first count)
• 1480-1491	Enno I
• 1491-1528	Edzard I
• 1528-1540	Enno II
• 1561-1599	Edzard II
• 1599-1625	Enno III
• 1625-1628	Rudolf Christian
• 1628-1648	Ulrich II
• 1651-1660	Enno Louis
• 1660-1665	George Christian
• 1690-1708	Christian Everhard
• 1708-1734	George Albert
• 1734–1744	Charles Edzard (last prince)
Chancellor
• 1503-1530	Wilhelm Ubben
• 1534-1538	Wilhelm Ubben
• 1539-1541	Henricus Ubbius
• 1599-1611	Thomas Franzius
• 1611–1637	Dothias Wiarda
• 1637-1653	Arnold von Bobart
• 1686-1692	Johann Heinrich Stamler
• 1720–1734	Enno Rudolph Brenneysen
Legislature	East Frisian Landschaft
Historical era	Middle Ages Early modern era
• Elevation of Ulrich I to Imperial Count	1 October 1464
• Appointment of Albert III as hereditary governor of East Frisia by Maximilian	27 March 1499
• Saxon feud	1514-1517
• Drafting of the East Frisian Landrecht	1518
• Colloquy of Oldersum	1526
• Partition of East Frisia between Edzard II and Johann II	1578-1591
• Emden Revolution	1595-1603
• Treaty of Berum	28 January 1600
• Accord of Osterhusen	21 May 1611
• Appeal War	1726-1727
• Emden Convention	14 March 1744
• Incorporation in the Kingdom of Prussia	25 May 1744
Area
1800[1]	1,800 km2 (690 sq mi)
Population
• 1744[2]	85,000
• 1765[3]	94,000
• 1786	103,000
• 1804	120,000
Preceded by Succeeded by East Frisian chieftains Frisian freedom Kingdom of Prussia
Today part of	Germany Netherlands

The County of East Frisia (Frisian: Greefskip Eastfryslân; Dutch: Graafschap Oost-Friesland) was a county (though ruled by a prince after 1662) in the region of East Frisia in the northwest of the present-day German state of Lower Saxony.