Joanna of Hainaut

Joanna of Hainault (1315–1374) was a Duchess of Jülich by marriage to William V, Duke of Jülich. She was the third daughter of William I, Count of Hainaut, and Joan of Valois. She was a younger sister of Philippa of Hainault, Queen of England, and Margaret II, Countess of Hainault.

Life
Joanna married William V, Duke of Jülich, their children were as follows:


 * Gerhard VI of Jülich, Count of Berg and Ravensberg, grandfather of Adolph I, Duke of Cleves
 * William II, Duke of Jülich
 * Richardis of Jülich, married Count Engelbert III of the Mark
 * Philippa of Jülich, married Godfrey II of Heinsberg
 * Reinold
 * Joanna of Jülich, married William I, Count of Isenburg-Wied
 * Isabella of Jülich, married John Plantagenet, 3rd Earl of Kent