Captain Thomas Barnes Cochrane, 11th Earl of Dundonald (14 April 1814 – 15 January 1885) was a British Army officer and politician.
He was son of the radical politician and sailor Thomas Cochrane, 10th Earl of Dundonald.
In February 1819 the O'Higgins attempted to raid the city of Callao, but was repelled by the coastal fortresses.
Cochrane joined the British army and eventually rose to the rank of captain.
[1] Thomas's eldest son, Douglas Cochrane learnt of his father's death when he was serving at the Desert March and the Relief of Khartoum.