County of Mark

County de La Mark
Grafschaft Mark (German)
c. 1198–1807
Coat of arms of Mark or Marck
Coat of arms
Map of the Lower Rhenish–Westphalian Circle around 1560, County of Mark highlighted in red
Map of the Lower Rhenish–Westphalian Circle around 1560,
County of Mark highlighted in red
StatusCounty
CapitalHamm
Historical eraMiddle Ages, Renaissance
• Established
12th century
• United with Cleves
1391
1500
• Part of
    Jülich-Cleves-Berg
1521
• To Brandenburg
1614
• Awarded to Berg
1806
• To Prussia
1815
Preceded by
Succeeded by
Duchy of Saxony
Grand Duchy of Berg

The County of Mark (‹See Tfd›German: Grafschaft Mark, French: Comté de La Marck colloquially known as Die Mark) was a county and state of the Holy Roman Empire in the Lower Rhenish–Westphalian Circle. It lay south of Lippe river on both sides of the Ruhr river along the Volme and Lenne rivers.

The Counts de la Mark were among the most powerful and influential Westphalian lords in the Holy Roman Empire. The name Mark derived from a small village Mark and the nearby Castle Mark, the latter was build between 1190 an 1202, both today incorporated in the unitary authority Hamm, founded in 1226 by the first Count, Adolph de la Mark. His father used the older title Altena or Berg-Altena. The name of the county is recalled to the present-day Märkischer Kreis district in lands south of the Ruhr in North Rhine-Westphalia, Germany, in 1975 when the districts were rearanged and the former district Altena was merged with former parts of neighbouring districts. The district Märkischer Kreis is only a the southern part of the former county, the county is now dived between Märkischer Kreis, parts of Cities Bochum, Dortmund, Hagen, Hamm and the districts Kreis Unna, Soest and Ennepetal