Template:Wp-Joanna of Hainaut

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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.