The Nuttall Encyclopedia
Queen of Navarre, and mother of Henry IV. of France; came to Paris to treat about the marriage of her son to Charles IX.'s sister; died suddenly, not without suspicion of foul-play, after signing the treaty; she was a Protestant (1528-1572).
Wood, James, ed. Entry for 'D'albret, Jeanne'. The Nuttall Encyclopedia. https://www.studylight.org/encyclopedias/eng/nut/d/dalbret-jeanne.html. Frederick Warne & Co Ltd. London. 1900.