Thomas Colledge was born in Kilsby Northamptonshire on 11 June 1797, and received his early medical education under Sir Astley Cooper, before formal training (late in life) at Aberdeen University graduating MD in 1839, aged 43.
[1] He earlier had found a position with the Honourable East India Company and through them practised in Canton and Macau and some other Chinese ports, first under the Hon.
During his residence in Canton and Macau he originated the first infirmary for the indigent Chinese, which was called after him, Colledge's Ophthalmic Hospital.
On the abolition of the office of surgeon to the consulate at Canton in May 1841, and his consequent return to England, deep regret was expressed by the whole community, European and native, and a memorial of his services was addressed to her majesty by the Portuguese of the settlement of Macau, which caused Lord Palmerston to settle on him an annuity from the civil list.
Before he left Asia, Colledge mentored an American surgeon, Peter Parker, who became the first full-time medical missionary to the Chinese.