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Darwin Correspondence Project

Arthur Hay, Viscount Walden, 9th marquess of Tweeddale


Ornithologist. Joined the Grenadier Guards in 1841, retiring as colonel in 1863 having served in campaigns in India and the Crimea. President of the Zoological Society of London, 1868–78. Known as Viscount Walden from the death of his elder brother in 1862; succeeded to the marquessate in 1876. FRS 1871.


Burke’s peerage



Burke’s peerage: A genealogical and heraldic dictionary of the peerage and baronetage of the United Kingdom. Burke’s peerage and baronetage. 1st– edition. London: Henry Colburn [and others]. 1826–.

ODNB: Oxford dictionary of national biography: from the earliest times to the year 2000. (Revised edition.) Edited by H. C. G. Matthew and Brian Harrison. 60 vols. and index. Oxford: Oxford University Press. 2004.