Swantibor III, Duke of Pomerania
Swantibor III, Duke of Pomerania, or, according to a different way of counting, Swantibor I.( born: – died: 21 June 1413) was a member of the House of Griffins, a Duke of Pomerania- Stettin and for a while governor of the Mittelmark.
Barnim III, Duke of Pomerania
Barnim III (14 August 1368) was a Pomeranian duke from the Griffin dynasty.
Elizabeth of Pomerania
Elizabeth of Pomerania( – 15 April 1393) was the fourth and final wife of Charles IV, Holy Roman Emperor and king of Bohemia.
Her parents were Bogislaw V, Duke of Pomerania, and Elisabeth of Poland.
Her maternal grandparents were Casimir III, King of Poland, and Aldona of Lithuania.
Barnim VII, Duke of Pomerania
Barnim VII( 1390 – 22 September 1450 in Wolgast) was the son of Duke Barnim VI, Duke of Pomerania.
He was from 1425 Duke of Pomerania- Wolgast- Demmin and later also Duke of Pomerania- Barth.
He supported his brother Wartislaw IX, Duke of Pomerania against Brandenburg.
Otto III, Duke of Pomerania
Otto III, Duke of Pomerania( 29 May 1444 – 7 September 1464) was a member of the House of Griffins and a Duke of Pomerania- Stettin.
Krystyna Rokiczana
Krystyna Rokiczana( died after 1365) was the wife of Casimir III the Great, of Poland.
She became the King's third wife in morganatic marriage.
Elizabeth of Poland, Duchess of Pomerania
Princess Elizabeth of Poland( 1326– 1361) was the eldest child of Casimir III of Poland and his first wife, Aldona of Lithuania.
Henry III, Duke of Mecklenburg
Henry III, Duke of Mecklenburg( 1337 – 24 April 1383) was Duke of Mecklenburg from 1379 until his death.
Bernhard III, Duke of Saxe-Meiningen
Bernhard III, Duke of Saxe- Meiningen( 1 April 1851 – 16 January 1928), was the last reigning duke of Saxe- Meiningen.
Casimir III, Duke of Pomerania
Casimir or Kasimir III (IV) (1348 – 24 August 1372), oldest son of Barnim III, was one of the Dukes of Pomerania-Stettin (Szczecin).
He died during a campaign against the Margraviate of Brandenburg during the siege of Königsberg (Neumark) in 1372.

Question: What is the date of death of Casimir Iii, Duke Of Pomerania's father?