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William Alexander Sidney Herbert

18th Earl of Pembroke, 15th Earl of Montgomery, (born 18 May 1978) is an English peer. He became earl in 2003 following the death of his father, Henry Herbert, 17th Earl of Pembroke.

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Spouse: Victoria Bullough

Children: Lady Alexandra Herbert, Reginald Herbert, Lord Herbert, Hon. Louis Herbert, Lady Beatrice Herbert

Parents: Henry Herbert, 17th Earl of Pembroke, Claire Pelly

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