Maxwell Alexander Robertson, English reports annotated, 1866-1900, Volume 1, Publisher: The Reports and Digest Syndicate, 1867. (page 567)
british-history.ac.uk
'Soho Square Area: Portland Estate, No. 21 Soho Square', in Survey of London: Volumes 33 and 34, St Anne Soho, ed. F H W Sheppard (London, 1966), pp. 72-73. British History Online http://www.british-history.ac.uk/survey-london/vols33-4/pp72-73 [accessed 18 September 2017].