Holstein-Itzehoe was a

county A county is a geographic region of a country used for administrative or other purposesChambers Dictionary, L. Brookes (ed.), 2005, Chambers Harrap Publishers Ltd, Edinburgh in certain modern nations. The term is derived from the Old French ...

that was formed from Schauenburg and Holstein by the division of

Holstein Holstein (; nds, label=Northern Low Saxon, Holsteen; da, Holsten; Latin and historical en, Holsatia, italic=yes) is the region between the rivers Elbe and Eider. It is the southern half of Schleswig-Holstein, the northernmost state of German ...

between

Gerhard Gerhard is a name of Germanic origin and may refer to: Given name * Gerhard (bishop of Passau) (fl. 932–946), German prelate * Gerhard III, Count of Holstein-Rendsburg (1292–1340), German prince, regent of Denmark * Gerhard Barkhorn (1919–19 ...

and

John John is a common English name and surname: * John (given name) * John (surname) John may also refer to: New Testament Works * Gospel of John, a title often shortened to John * First Epistle of John, often shortened to 1 John * Second ...

in 1261. Gerhard of Holstein-Itzehoe was the only regent. After his death in 1290 Holstein-Itzehoe was divided up between Gerhard's sons into the three counties of

Holstein-Rendsburg Holstein-Rendsburg is the name of a county that existed from 1290 to 1459, ruled by a line of the Schauenburg family. Rise and fall of the county The Schauenburgs had ruled in Holstein since 1110/1111. In 1290, when Count Gerhard I of Holstei ...

Holstein-Plön Holstein-Plön was the name of a county ruled by the House of Schauenburg that ruled in Holstein and Stormarn from 1110/11. The county emerged before 1295 when the County of Holstein-Itzehoe was partitioned after the death of Count Gerhard I of ...

and

Holstein-Pinneberg The County of Holstein-Pinneberg (), also known as the County of Schauenburg and Holstein-Pinneberg (), was a small territory which existed from 1290 until 1640, centred around Pinneberg in modern-day Schleswig-Holstein, Germany. Rise and fall of ...

(the latter ruled in personal union with the

County of Schauenburg The County of Schaumburg (german: link=no, Grafschaft Schaumburg), until ca. 1485 known as Schauenburg, was a state of the Holy Roman Empire, located in the present German state of Lower Saxony. Its territory was more or less congruent with ...

, thus sometimes called Holstein and Schauenburg, or Holstein-Schauenburg, however Schauenburg was the name of the ruling dynasty in all the then Holsatian counties).

Rise and fall of the county

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Itzehoe Itzehoe (; nds, Itzhoe) is a town in the German state of Schleswig-Holstein. As the capital of the district Steinburg, Itzehoe is located on the Stör, a navigable tributary of the Elbe, 51 km (31.7 mi) northwest of Hamburg and 24 ...

Counties of the Holy Roman Empire Holstein