Descendancy

Marie d'Eu: B: ABT 1235. D: 01 OCT 1260
    + Alfonse de Brienne: B: ABT 1233. D: 1270
        2 John de Brienne: B: ABT 1260. D: 12 JUN 1294
            + Beatrix de Castillion: B: ABT 1260. D: UNKNOWN

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