Joan of Montferrat (d. 1127)

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Joan of Montferrat (d. 1127)

Countess of Flanders. Died in 1127; daughter of Rainer also spelled Reiner, marquess of Montferrat, and Gisela of Burgundy ; half-sister of Adelaide of Maurienne (d. 1154); second wife of William III the Clito (1101–1128), count of Flanders (r. 1127–1128). William III's first wife was Sybilla of Anjou (1112–1165).

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