James Clerk Maxwell (1831-1879), physicist, was admitted to Peterhouse (after attending Edinburgh University) in October 1850, migrating to Trinity in Lent Term 1851. For further details see numerous biographies and P. M. Harman, ‘Maxwell, James Clerk (1831-1879)’, Oxford Dictionary of National Biography, Oxford University Press, 2004; online edn, Oct 2009 [http://www.oxforddnb.com/view/article/5624, accessed 30 Oct 2014] For an account of the Clerk (Maxwell) and Cay families see David O. Forfar, 'Origins of the Clerk (Maxwell) Genius' first published in the 'Bulletin of the Institute of Mathematics and its Applications', vol. 28, no. 12, pp. 4-16, re-printed in the 'James Clerk Maxwell Commemorative Booklet' produced by the James Clerk Maxwell Foundation on the occasion of the Fourth International Congress on Industrial and Applied Mathematics in Edinburgh in July 1999 available on-line at http://www.clerkmaxwellfoundation.org/Maxwell_-_Origins_of_Genius.pdf