Joanna of Hainault (c. 1312–1374) was a Duchess of Jülich by marriage to William V, Duke of Jülich. She was the third daughter of William I, "The Good" 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

After her marriage, Joanna visited her mother Joan of Valois in January or February to May 1326, and the mother and daughter visited Joanna's sister Philipa, Queen of England, in 1329.

Marriage and Issue

Joanna married William V, Duke of Jülich on 26 February 1324 in Cologne. Their children were as follows:

Ancestry