Joan Holland, Duchess of Brittany

Lady Joan Holland, (1350–1384), was Duchess consort of Brittany as the second wife to John IV, Duke of Brittany. She was the daughter of Joan of Kent and Thomas Holland, 1st Earl of Kent. Her mother married secondly to Edward the Black, Prince of Wales and was mother to Richard II.

Lady Joan was the second Duchess Consort to John IV. She had been preceded by her cousin, Mary of Waltham (sister of Edward, Prince of Wales), and would be succeeded by Joanna of Navarre, future queen consort to Henry IV. Her marriage to John IV took place in London in May 1366. The couple had no children.

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