[2] He was the son of William Keate of Wells, Somerset, and Oxford graduate, and younger brother of the Rev.
[7] Representing the College, he witnessed an 1803 electric demonstration with a corpse by Giovanni Aldini in London, accompanied by Joseph Constantine Carpue.
[7] Hunter died in 1793, to be succeeded as Surgeon-General to the Army by Gunning, and as Inspector of Regimental Infirmaries by Keate.
[7][15] Keate inspected the Savoy Hospital in October of that year, finding six beds in a noisy situation because of prisoners.
[1] With Lucas Pepys, Keate was blamed for a lack of medical resources and attention in the Walcheren Campaign of 1809.
[7] Keate opposed the claims made by the surgeon Sir William Adams to have an effective cure for a type of ophthalmia.
Adams in 1817 set up a specialised treatment facility within Chelsea Hospital for what is now recognised as a form of trachoma, afflicting soldiers who had served in the Egyptian campaign.
[21] With Benjamin Moseley of the Hospital and William North, Keate in 1818 produced outcomes research casting doubt on Adams's treatment.