Siemomysł, Duke of Pomerania
Siemomysł, Siemosił, or Zemuzil was the first historically verifiable Duke of Pomerania, recorded in 1046 in the Annals of Niederaltaich. Wikipedia
Born: 1000 AD
Died: June 29, 1046 (age 46 years)
Children: Świętobor, Duke of Pomerania
Great grandchildren: Bogusław I, Duke of Pomerania, Casimir I, Duke of Pomerania, and Woizlava of Pomerania
Grandchildren: Wartislaw I, Duke of Pomerania, Slavina, and Swietopelk I, Duke of Pomerania