William was Seigneur de Avesnes and Viscount of Limoges from 1404 until his death. He was also briefly Count of Périgord following the death of his brother John II, Count of Penthièvre, in 1454.

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William was Seigneur de Avesnes and Viscount of Limoges from 1404 until his death. He was also briefly Count of Périgord following the death of his brother John II, Count of Penthièvre, in 1454.

From Wikipedia (CC BY-SA 4.0).