Original: John of Gaunt, 1st Duke of Lancaster, Duke of Aquitaine (6 March 1340   3 February 1399) was a member of the House of Plantagenet, the third surviving son of King Edward III of England and Philippa of Hainault.
Simplified: John of Gaunt, 1st Duke of Lancaster, 1st Duke of Aquitaine (6 March 1340 – 3 February 1399) was a member of the House of Plantagenet, the third surviving son of Edward III of England and Philippa of Hainault.