|Place of Birth||Bungay, Suffolk|
|Place of Death||London|
From The Oxford Dictionary of National Biography:
Brother to Robert Wallis, was born at Bungay, Suffolk, on 5 February 1805, practised for some years as an engraver of small topographical illustrations for books. Both Henry and Robert often signed their work simply ‘Wallis’, leading on occasion to problems of identification. In the 1840s Henry suffered two attacks of paralysis, which obliged him to find another occupation. He then turned to picture dealing, and in 1861 was offered the post of manager at the French Gallery at 120 Pall Mall. He bought out the owner, Ernest Gambart, in 1867 for £1000. In 1871 he retired in favour of his son Thomas. He died at home at 55 Effra Road, Brixton, on 15 October 1890.
Anita McConnell, ‘Wallis, Robert William (1794–1878)’, Oxford Dictionary of National Biography, Oxford University Press, 2004; online edn, Sept 2010 [http://www.oxforddnb.com/view/article/28577, accessed 3 May 2013]