Wartislaw IV, Duke of Pomerania
Wartislaw IV was Duke
A duke or duchess is a member of the nobility, historically of highest rank below the monarch, and historically controlling a duchy...

 of Pomerania-Wolgast
Duchy of Pomerania
The Duchy of Pomerania was a duchy in Pomerania on the southern coast of the Baltic Sea, ruled by dukes of the House of Pomerania ....

 from 1309 until his death. He was the only son of Duke Bogislaw IV of Pomerania
Bogislaw IV, Duke of Pomerania
Bogislaw IV , of the Griffins dynasty, was Duke of Pomerania for thirty years.Bogislaw was the eldest son of Duke Barnim I by his first wife, sometimes said to be a daughter of King Eric X of Sweden. He was an adult at his father's death in 1278, having been co-ruler since 1276...

 and his wife Margareta, a daughter of Prince Wizlaw II of Rugia
Principality of Rugia
The Principality of Rugia or Principality of Rügen was a Danish principality consisting of the island of Rügen and the adjacent mainland from 1168 until 1325. It was governed by a local dynasty of princes of the Wizlawiden dynasty...

. Wartislaw IV had four sisters: Jutta, Elisabeth, Margareta and Eufemia.

Wartislaw IV married Elisabeth, daughter of Count Ulrich I of Lindow
Lindow in der Mark, short: Lindow , is a town in the Ostprignitz-Ruppin district, in Brandenburg, Germany. It is located 14 km northeast of Neuruppin, and 29 km northwest of Oranienburg...

Neuruppin is a town in Brandenburg, Germany. Located on the shore of Ruppiner See , it is the capital of the district of Ostprignitz-Ruppin. Population: 32,800 .-Overview:...

; they had three sons: Bogislav V, Barnim IV
Barnim IV, Duke of Pomerania
Barnim IV of Pomerania was a Duke of Pomerania-Wolgast-Rügen.He was the second son of Duke Wartislaw of Pomerania-Wolgast and the brother of Bogislaw V and Wartislaw V....

 and Wartislaw V.

In 1309 Wartislaw IV succeeded his father as duke of Pomerania-Wolgast and in 1317 received the Lands of Schlawe and Stolp
Lands of Schlawe and Stolp
The Lands of Schlawe and Stolp are a historical region in Pomerania, centered around the towns of Sławno and Słupsk in Farther Pomerania...

 as a fief from Margrave Waldemar of Brandenburg-Stendal
Waldemar, Margrave of Brandenburg-Stendal
Waldemar of Brandenburg was Margrave of Brandenburg-Stendal, the last from the Ascanian House.-Life:He was a son of Conrad, Margrave of Brandenburg-Stendal and Constance, daughter of Przemysł I of Greater Poland...

. Upon Waldemar's death in 1319, his minor cousin and heir Henry II was under Wartislaw's tutelage, his plans to achieve the rule over Brandenburg
Margraviate of Brandenburg
The Margraviate of Brandenburg was a major principality of the Holy Roman Empire from 1157 to 1806. Also known as the March of Brandenburg , it played a pivotal role in the history of Germany and Central Europe....

 however were shattered by King Louis IV of Germany
Louis IV, Holy Roman Emperor
Louis IV , called the Bavarian, of the house of Wittelsbach, was the King of Germany from 1314, the King of Italy from 1327 and the Holy Roman Emperor from 1328....

, who finally granted the margraviate to his son Louis V of Wittelsbach
Louis V, Duke of Bavaria
Louis V, Duke of Bavaria, called the Brandenburger was Duke of Bavaria and as Louis I also Margrave of Brandenburg and Count of Tyrol. Louis V was the eldest son of Emperor Louis IV and his first wife Beatrix of Świdnica...

 in 1323.

In 1321 Wartislaw signed an inheritance treaty with his maternal uncle Prince Wizlaw III of Rugia, and upon his death in 1325 oversaw the unification with the Principality of Rügen, then a Danish
Kingdom of Denmark
The Kingdom of Denmark or the Danish Realm , is a constitutional monarchy and sovereign state consisting of Denmark proper in northern Europe and two autonomous constituent countries, the Faroe Islands in the North Atlantic and Greenland in North America. Denmark is the hegemonial part, where the...

 fief. King Christopher II of Denmark
Christopher II of Denmark
Christopher II was king of Denmark from 1320 to 1326 and again from 1329 until his death. He was son of Eric V. His name is connected with national disaster, as his rule ended in an almost total dissolution of the Danish state.-Biography:Being the brother of King Eric VI, Christopher was a...

 however, despite his former assertions, enfeoffed the Mecklenburg
Mecklenburg is a historical region in northern Germany comprising the western and larger part of the federal-state Mecklenburg-Vorpommern...

 and Werle
Werle was a fiefdom, or Herrschaft in German, in the Holy Roman Empire that was founded in 1235. It was created in the partition of territories in Mecklenburg that followed the death of Henry Borwin II of Mecklenburg ....

 princes, thereby sparking a war of succession, in which late Wartislaw's minor sons, backed by King Christopher's opponent Count Gerhard III of Holstein
Gerhard III
Gerhard III of Holstein . Sometimes called “Gerhard the Great”. In Denmark also known as “Count Gert” or “den kullede greve” . A German prince who was the ruler of most part of Denmark during the Interregnum 1332–1340.His father was Henry I of Schauenburg and Holstein-Rendsburg...

 and Duke Barnim III of Pomerania-Stettin
Barnim III, Duke of Pomerania
Barnim III was a Pomeranian duke from the Griffin dynasty. He ruled Pomerania-Stettin in the years 1344–1368, although he had been a co-regent of his father Otto I since 1320, taking a prominent part in the defence and government of the duchy. Aiming for independence from the Margraviate of...

had to struggle for their heritage, until Mecklenburg renounced Rugia in 1328.
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