Joan of Navarre, Queen of England (born 1370)

Joan of Navarre, also known as Joanna was Duchess of Brittany by marriage to Duke John IV and later Queen of England as the wife of King Henry IV. Joan was a daughter of Charles II of Navarre and Joan of France. She served as regent of Brittany from 1399 until 1403 during the minority of her eldest son, Duke John V. She also served as regent of England during the absence of her stepson King Henry V in 1415. Four years later Henry V imprisoned her and confiscated her money and land. Joan was released in 1422, shortly before Henry's death.