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A letter from Margaret of Constantinople, Countess of Flanders (1245, March)

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A letter from Joan of Constantinople, Countess of Flanders (1240, November 4)

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A letter from Ferdinand/Ferrand of Portugal, Count of Flanders (1230, March)

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A letter from Margaret of Constantinople, Countess of Flanders (1256, March 22)

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A letter from Margaret of Constantinople, Countess of Flanders (1250, May 19)

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A letter from Thomas of Savoy, count of Flanders (1238, February)

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Joan of Constantinople, Countess of Flanders

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A letter from Joan of Constantinople, Countess of Flanders (1220, July)

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A letter from Joan of Constantinople, Countess of Flanders (1217, July 10)

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A letter from Joan of Constantinople, Countess of Flanders (1214, October 24)