Facts and Events
She had a brother Wenceslaus, King of the Romans and one half sister Katharine of Bohemia whose mother was Blanche of Valois who was Charles IV's previous wife. Elisabeth had another half sister who was the daughter of Blanche, Margaret of Bohemia but she died in 1349 so Elisabeth never knew her.
After the death of her mother, Charles remarried for the last time to Elizabeth of Pomerania. Elisabeth gained six half-siblings from the marriage: Anna, Queen of England, Sigismund, Holy Roman Emperor, Margaret "the younger" of Bohemia, John of Görlitz, Charles and Henry.
Elisabeth married when she was only eight in 1366 to Albert III, Duke of Austria. Elisabeth and Albert had no children and she died aged only fifteen in 1373; she was buried with Albert's parents in Gaming Charterhouse in Lower Austria.