Casimir I (or Kasimir I) (after 1130 – fall of 1180) was

duke of Pomerania This is a list of the duchies and dukes of Pomerania. Dukes of the Slavic Pomeranian tribes (All Pomerania) The lands of Pomerania were firstly ruled by local tribes, who settled in Pomerania around the 10th and 11th centuries. Non-dynastic ...

since his uncle Ratibor I's death in 1155/56. A son of

Wartislaw I Wartislaw I (''Warcisław I'') (around 1092 – August 9, 1135) was the first historical ruler of the Duchy of Pomerania and the founder of the Griffin dynasty. Most of the information about him comes from the writings on the life of Otto of ...

, he co-ruled Pomerania with his older brother Bogislaw I, receiving Pomerania-Demmin as his share just as Bogislaw received Pomerania-Stettin, and ruling the remainder in common. After the lost 1164

Battle of Verchen The Battle of Verchen (german: Schlacht bei Verchen) was a battle between Saxons and West Slavic Obotrites on 6 July 1164. The Obotrites were attacked by Saxons and Danes in 1160, resulting in the death of the Obotrite prince, Niklot, and the par ...

, where Casimir and Bogislaw aided an

Obodrite The Obotrites ( la, Obotriti, Abodritorum, Abodritos…) or Obodrites, also spelled Abodrites (german: Abodriten), were a confederation of medieval West Slavic tribes within the territory of modern Mecklenburg and Holstein in northern Germany ( ...

rebellion against the duke of

Saxony Saxony (german: Sachsen ; Upper Saxon: ''Saggsn''; hsb, Sakska), officially the Free State of Saxony (german: Freistaat Sachsen, links=no ; Upper Saxon: ''Freischdaad Saggsn''; hsb, Swobodny stat Sakska, links=no), is a landlocked state of ...

Henry the Lion Henry the Lion (german: Heinrich der Löwe; 1129/1131 – 6 August 1195) was a member of the Welf dynasty who ruled as the duke of Saxony and Bavaria from 1142 and 1156, respectively, until 1180. Henry was one of the most powerful German p ...

, Casimir and Bogislaw joined Saxony receiving their respective part duchies as a fief from Henry the Lion. Casimir also received one third of the

Danish Danish may refer to: * Something of, from, or related to the country of Denmark People * A national or citizen of Denmark, also called a "Dane," see Demographics of Denmark * Culture of Denmark * Danish people or Danes, people with a Danish a ...

''terra''

Wolgast Wolgast (; csb, Wòłogòszcz) is a town in the district of Vorpommern-Greifswald, in Mecklenburg-Vorpommern, Germany. It is situated on the bank of the river (or strait) Peenestrom, vis-a-vis the island of Usedom on the Baltic coast that can be ...

. When Saxony allied with the Danes to subdue the

Rani ''Rani'' in Indian Subcontinent and Southeast Asia, sometimes spelled ''Ranee'', is a Hindu/Sanskrit feminine given name. The term is the female form of the term for princely rulers in South and Southeast Asia and applies equally to the wife of a ...

kingdom of

Rügen Rügen (; la, Rugia, ) is Germany's largest island. It is located off the Pomeranian coast in the Baltic Sea and belongs to the state of Mecklenburg-Western Pomerania. The "gateway" to Rügen island is the Hanseatic city of Stralsund, where ...

in 1168, Casimir as well as Bogislaw aided Henry. Casimir also managed to take control in Circipania, thereby expanding Pomerania to the West. Casimir participated in other campaigns launched by Henry the Lion, as an 1178/79/80 expedition into

Lusatia Lusatia (german: Lausitz, pl, Łużyce, hsb, Łužica, dsb, Łužyca, cs, Lužice, la, Lusatia, rarely also referred to as Sorbia) is a historical region in Central Europe, split between Germany and Poland. Lusatia stretches from the Bóbr ...

and

Jüterbog Jüterbog () is a historic town in north-eastern Germany, in the Teltow-Fläming district of Brandenburg. It is on the Nuthe river at the northern slope of the Fläming hill range, about southwest of Berlin. History The Slavic settlement of ' ...

. However, Casimir suffered heavy losses at the

battle at Julin Bridge The Battle at Julin Bridge was a naval and land conflict fought around 1170 between the kingdom of Denmark and the Pomeranians. It took place in modern-day Wolin, Poland. The Danish fleet was led by Valdemar I and Absalon and fought the army and ...

and later died in 1180 in a battle with Brandenburg margrave

Otto I Otto I (23 November 912 – 7 May 973), traditionally known as Otto the Great (german: Otto der Große, it, Ottone il Grande), was East Francia, East Frankish king from 936 and Holy Roman Emperor from 962 until his death in 973. He was the olde ...

, having no children yet with his wife Pritolawa. Pomerania-Demmin was then governed by his brother Bogislaw and later by Bogislaw's second son Casimir II, his first son Bogislaw II receiving Pomerania-Stettin, so Pomerania would further be governed in a manner resembling the reign of Casimir I and Bogislaw I. Casimir founded monasteries in Broda (1170) and Belbuck (1177). He participated in founding the monastery

Dargun Dargun is a town in the Mecklenburgische Seenplatte district, in Mecklenburg-Western Pomerania, Germany. It is situated km west of Demmin. It is famous for Dargun Palace, a former Cistercian abbey. History From 1815 to 1918 Dargun was part of ...

(1172/74) and in 1176/80 granted privileges to the

bishopric of Wollin The Bishopric of Cammin (also Kammin, Kamień Pomorski) was both a former Roman Catholic diocese in the Duchy of Pomerania from 1140 to 1544, and a secular territory of the Holy Roman Empire ( Prince-Bishopric) in the Kolberg (Kołobrzeg) area f ...

that moved its seat to Cammin (now

Kamień Pomorski Kamień Pomorski (; csb, Kamiéń; german: Cammin or ''Kammin'') is a town in the West Pomeranian Voivodeship of north-western Poland, on the Baltic coast. It is the seat of an urban-rural gmina (administrative district) in Kamień County which ...

) because of Danish expeditions.

See also