Holstein

river in Schleswig-Holstein, Germany

thumb|130px|Coat of arms of Holstein: a stylised nettle leaf; similar to the coat of arms of Schaumburg

territory of the Holy Roman Empire and its successors, 1474–1867

thumb|Historical map of Wagria (ca. 1682-88) Wagria (, Waierland or Wagerland) is the northeastern part of Holstein in the German state of Schleswig-Holstein, corresponding roughly to the districts of Plön and Ostholstein. The word "Wagria" is derived from the Slavic Lechites tribe of Wagri.

Carolingian border between Saxons and Slavs

rolling country

German politician (1837-1909)

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.

Holstein-Itzehoe was a county that was formed from Schauenburg and Holstein by the division of Holstein between Gerhard and John in 1261.

Holstein-Glückstadt or Schleswig-Holstein-Glückstadt is the historiographical name, as well as contemporary shorthand name, for the parts of the duchies of Schleswig and Holstein that were ruled by the Kings of Denmark in their function as dukes of Schleswig and Holstein, thus also known as Royal Schleswig-Holstein. Other parts of the duchies were ruled by the Dukes of Schleswig-Holstein-Gottorp. The territories of Holstein-Glückstadt are located in present-day Denmark and Germany. The main centre of administration was Segeberg and from 1648 Glückstadt (founded in 1617) on the River Elbe.

Holstein-Plön was a county () in the Holy Roman Empire centred on Plön in Holstein. It was held by the House of Schauenburg who had ruled in Holstein and Stormarn since 1110/11. The county emerged before 1295 when the County of Holstein-Itzehoe was partitioned after the death of Count Gerhard I of Holstein-Itzehoe (died 1290) into the counties of Holstein-Plön, Holstein-Pinneberg and Holstein-Rendsburg.

The County of Holstein-Segeberg was a county in the state of Holstein from 1273 to 1308 and a line of the noble family of Schauenburg and Holstein. The only count of Holstein-Segeberg was Adolphus V, nicknamed the Pomeranian, who was born in 1252 and died in 1308.

thumb|upright=1.2|Plön Castle, former residence of the dukes

Holstein-Rendsburg is the name of a county that existed from 1290 to 1459, ruled by a line of the Schauenburg family.

The imperial county of Holstein-Kiel was a line of the House of Schauenburg and Holstein from 1261 to 1390.