Eberhard I, Count of the Mark

Eberhard I (c. 1255–1308) was a German nobleman. He was Count of the Mark from 1277 until his death. He was the son of Engelbert I, Count of the Mark en Cunigonde of Blieskastel.

In 1277, Count Herman of Lohn abducted Eberhard's father Count Engelbert I, Count of the Mark near Tecklenburg and imprisoned him in the Castle of Bredevoort, where he later died. In 1278 Eberhard took revenge and conquered the castle.

Eberhard also participated in the alliance against the Electorate of Cologne and gained the independence of the County of Mark from the Archbishop of Cologne after the victory in the Battle of Worringen in 1288. He also obtained Brakel, Westhofen and Waltrop.

Marriage and children

Eberhard married with:

• Irmgard of Berg († 1294), daughter of Adolf VII of Berg
• Mary of Loon, daughter of Arnold V of Loon, and had:
  • Margaret, married in 1299 Gerard of Katzenelnbogen († 1312)
  • Cunigonde, married in 1320 Diederich of Heinsberg-Blankenburg († 1361)
  • Irmgard
  • Engelbert II (1275–1328)
  • Koenraad († 1353), married Elisabeth of Cleves.
  • Catharine, abbess of Froendenberg
  • Adolph II of La Marck, Prince-bishop of Liège († 1344)
  • Richarda, married John III of Reifferscheidt-Bedburg
  • Johanna, married Philip IV of Reifferscheidt-Wildenberg
  • Engelbert I, lord of Loverdal