Joanna of Navarre was born in 1370, in Pamplona, Navarre and on the 2nd October 1386 married John V, the Duke of Brittany and bore him nine children:
Jeanne of Brittany (1387-1388), John VI the Duke of Brittany (1389-1442), Marie of Brittany (1391-1446), Marguerite of Brittany (1392-1428), Arthur III the Duke of Brittany (1393-1458), Gilles of Brittany (1394-1412), Richard of Brittany (1395-1438), Blanche of Brittany (1397-1419) and a daughter (1388).
Her husband died on the 1st November 1399, and she became Regent for John VI the new Duke of Brittany over the next four years.
On the 7th February 1403, she married King Henry IV of England, becoming Queen Consort of England, but bore him no children.
In 1419 during the reign of King Henry V, she was accused of witchcraft, convicted of attempts in poisoning her King. She spent four years in Pevensey Castle in Sussex. In 1423 she was moved to Nottingham Castle, where she spent the rest of her life until she died on the 10th June 1437.
She is buried in Canterbury Cathedral next to her husband; King Henry IV of England.