Peter Salt, 'Wyatville's remodelling and refurbishment of Sidney Sussex College, 1820–1837', Proceedings of the Cambridge Antiquarian Society, 81 (1992), 115–55 doi:10.5284/1073206
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Montague-Smith, P.W. (ed.), Debrett's Peerage, Baronetage, Knightage and Companionage, Kelly's Directories Ltd, Kingston-upon-Thames, 1968, p. 336, Viscount de L'Isle; for a history of this crest, said to have been copied from the heraldic emblem of King Louis XII by Sir William Sidney, see [1]