Wenceslaus I was the first Duke of Luxembourg from 1354. He was the son of John the Blind, King of Bohemia, and Beatrice of Bourbon. Wikipedia
Born: February 25, 1337, Prague, Czechia
Died: December 7, 1383 (age 46 years), Luxembourg
Grandchildren: Wenzelin de Latour, Seigneur de la Tour-devant-Virton and NN
Spouse: Joanna, Duchess of Brabant (m. 1352)
Parents: John of Bohemia and Beatrice of Bourbon, Queen of Bohemia
Siblings: Charles IV