This person is the subject of ongoing research. We have started by researching their relationship to the enslavement of people.
No known connections with slavery.
No known connections with abolition.
National Gallery painting connections
Donor: bequeathed in 1879: NG1054–1061.
R. S. Checketts, 'Henderson, John', in C. Matthew et al. (eds), Oxford Dictionary of National Biography, Oxford 1992-, https://doi.org/10.1093/ref:odnb/12914
Checked and found — Item on publisher's website
History of Parliament Trust (ed.), The History of Parliament: British Political, Social & Local History, London 1964-, https://www.historyofparliamentonline.org/
Checked and not found — Item on publisher's website