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Chibnall, Marjorie (1991). The Empress Matilda: Queen Consort, Queen Mother and ...
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Chibnall, Marjorie (1991). The Empress Matilda: Queen Consort, Queen Mother and Lady of the English. Oxford: Blackwell. ISBN 0-631-19028-7. p. 123. Cited by Wikipedia Josce de Dinan Accessed Jan 1, 2018 jhd