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In page Anne de Mortimer:

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Anne de Mortimer died soon after the birth of her son Richard, on 22 September 1411.[1] She was buried at Kings Langley, Hertfordshire, once the site of Kings Langley Palace,[2] which housed the tombs of her husband's parents Edmund of Langley and Isabella of Castile. After the dissolution of the monasteries, all three were reburied at the All Saints' Church, Kings Langley.[citation needed]