India Office Lucknow, Uttar Pradesh marriages (20 November 1781 John Belli married Elizabeth Stuart Glover, widow) 
Burial record Holy Trinity, Clapham (27 February 1805 John Belli Esqr. aged 68 years from Baker St., Portman Square)
Oxford Dictionary of National Biography entry for his son-in-law, William Howley. J. R. Garrard, ‘Howley, William (1766–1848)’, Oxford Dictionary of National Biography, Oxford University Press, 2004; online edn, Jan 2008 accessed 10 Nov 2016
First-hand information as remembered by David Hooley, Monday, September 1, 2014.
At the time of writing the India office links are not working but the records can be searched for at