Henry of Essex, Lord of Rayleigh and Haughley (son of Robert Fitz Suein of Essex and Gunnor Bigod) and his wife Cicely. [Ancestral Roots]
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(c) Henry de Essex was son (by his 1st wife Gunnor Bigod) of Robert de Essex (FitzSuein), who m., 2ndly, Aubrey's sister Alice. He forfeited his vast estates in 1163, when he was defeated in single combat by Robert de Montfort, who had accused him of treason, because in a battle with the Welsh in 1157 he threw away the royal banner and fled. M. Berger supposed that the forfeiture of Henry took place in 1157 and therefore that all charters atttested by him were issued ante 1158. [Complete Peerage X:206 note (c)]
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Cicely has been identified as Cecily de Valognes by Rosie Bevan based on transactions found in the Public Records Office (PRO) of England.