Elizabeth was the daughter of John Cobham and Joan d'Oyly. The date and place of her birth have not been found.
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John Cobham |
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Joan d'Oyly |
sir John VI d'Oyly |
sir Thomas d'Oyley |
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Margaret de Hastings |
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Margaret Joan de Tregoz |
Thomas de Tregoz |
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Joan de Poynings |