Lord Eustace Brownlow Henry (Gascoyne-) Cecil (24 April 1834 – 3 July 1921) was a British, Conservative Party politician.
Cecil was the youngest son of James Gascoyne-Cecil, 2nd Marquess of Salisbury by his first wife Frances Gascoyne and was educated at Harrow and the Royal Military College, Sandhurst.
He served with the 43rd Light Infantry and with the Coldstream Guards in the Crimean War from 1855 to 1856, rose to the rank of lieutenant colonel in 1861 and retired from the army in 1863.
[1] In 1874, Conservative Prime Minister Benjamin D'Israeli appointed Cecil to be the second Surveyor General of the Ordnance, the Secretary of State's principal civilian adviser.
His book entitled Impressions of Life at Home and Abroad was published in 1865 by Hurst and Blackett of 13 Great Marlborough Street London.