Question: What is the birthdate of this Count of Luxembourg and King of Bohemia, who was father of Psalter of Bonne de Luxembourg?

Related documents: [0]  [DOC] The Psalter of Bonne de Luxembourg is a small 14th-century illuminated manuscript in tempera, grisaille, ink and gold leaf on vellum, now in the collection of The Cloisters, New York. It was probably executed for Bonne de Luxembourg, Duchess of Normandy, daughter of John the Blind and the wife of John II of France, probably at the end of her husband's life, c 1348-49. At the time illuminated manuscripts could compete with monastic scriptora and panel painting as commercially attractive donor portraits. Bonne de Luxembourg died of plague in 1349. [END] 
[1]  [DOC] John the Blind (Luxembourgish: "Jang de Blannen" ; German: "Johann der Blinde von Luxemburg" ; ; 10 August 1296 – 26 August 1346) was the Count of Luxembourg from 1309 and King of Bohemia from 1310 and titular King of Poland. He was the eldest son of the Holy Roman Emperor Henry VII and his wife Margaret of Brabant. He is well known for having died while fighting in the Battle of Crécy at age 50, after having been blind for a decade. [END]  
Answer: 10 August 1296
10 August 1296