Henry IV, Count of Holstein-Rendsburg

Henry IV, Count of Holstein-Rendsburg (1397 – 28 May 1427) was Count of Holstein-Rendsburg and Duke of Schleswig from 1404 until his death.

Henry IV
Duke of Schleswig
Count of Holstein-Rendsburg
Born1397
Died(1427-05-28)28 May 1427
Flensburg
BuriedSt. Lawrence church in Itzehoe
Noble familyHouse of Schauenburg
FatherGerhard VI, Count of Holstein-Rendsburg
MotherCatherine Elisabeth of Brunswick-Lüneburg

Life

Henry was the son of Gerhard VI of Holstein and Catherine Elisabeth of Brunswick-Lüneburg (d. 1417/1422) from the Holstein-Rendsburg line of the House of Schauenburg. His father, Gerhard VI, fell in battle on 4 August 1404 during an attempt to conquer Dithmarschen. Henry was seven years old at the time; his mother took up his guardianship, while the regency was taken up by his uncle Henry III.

Henry III had been at war with Denmark since 1408 over the Duchy of Schleswig. Henry III claimed it as a hereditary fief; the Danish Margaret I and later Eric VII, wanted the duchy for themselves. In 1413, the regency ended. Henry IV, together with his younger brothers Adolf VIII and Gerhard VII, continued the war with Denmark. In 1417, a cease fire was agreed, after mediation by the city of Lübeck. In 1423, the war continued.[1]

On 28 June 1424 in Buda, Emperor Sigismund ruled in favour of the Danes;[2] however, this did not end hostilities.[3] Henry IV appealed to Pope Martin V to overrule the emperor's decision. However, this appeal was unsuccessful. In 1426, Danish troops occupied areas around the cities of Schleswig and Flensburg. Henry IV tried to gain support from the Hanseatic cities in Saxony, from the Frisians in Eiderstedt and even from the Victual Brothers.[4]

During the Danish-Holstein-Hanseatic war Henry IV fell in battle on 28 May 1427, during the siege of Flensburg. He was buried in the St. Lawrence church in Itzehoe.

Legacy

During Henry's rule as Duke of Schleswig, representatives of the North Frisian Hundreds gathered on 17 June 1426 on the island Föhr to record Frisian law in the Siebenhardenbeliebung. This is the oldest preserved formulation or Frisian law.

Ancestry
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gollark: It says "text file busy" if I just try and `cp`.
gollark: Ah, I can in fact swap out an in-use executable safely, great.
gollark: Hmm, is there a way to swap out an in-use executable safely?
gollark: My dubious custom nginx™ supports HTTP/3 (QUIC), but I had to disable that due to ??? browser problems.

References
  • Karl Jansen (1880), "Heinrich IV., Graf von Holstein", Allgemeine Deutsche Biographie (ADB) (in German), 11, Leipzig: Duncker & Humblot, pp. 525–526

Footnotes
  1. Gesellschaft für Flensburger Stadtgeschichte (eds.): Flensburg in Geschichte und Gegenwart, Flensburg, 1972, p. 296 ff
  2. Palle Lauring: Geschichte Dänemarks, Wachholtz, Neumünster, 1964, p. 101.
  3. Max Pappenheim: Die Siebenhardenbeliebung vom 17. Juni 1426. Festschrift zur Fünfhundertjahrfeier, Verlag Kunstgewerbemuseum, Flensburg, 1926, p. 7
  4. See: Karl Jansen, 1880
Henry IV, Count of Holstein-Rendsburg
House of Schauenburg
Born: 1397 Died: 28 May 1427
Danish nobility
Preceded by
Gerhard II		 Duke of Schleswig
as Henry III
1404-1427		 Vacant
Title next held by
Adolph I
German nobility
Preceded by
Henry III		 Count of Holstein-Rendsburg
as Henry IV
1421-1427		 Succeeded by
Adolph VIII and
Gerhard VII
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