General Sir William O'Grady Haly KCB (2 January 1811 – 19 March 1878) was a British Army officer who was the Commander of the British Troops in Canada.

The family lived largely on his mother's annual stipend from her father, Richard Banister.

[2] Haly was commissioned as an ensign in the 4th Regiment of Foot on 17 June 1828.

[4] In the Crimean War, Haly was wounded in the Battle of Inkerman (1854) and was rescued by Brevet Major Hugh Rowlands and John McDermond, both of whom received the Victoria Cross for their actions.

[5] After fighting in the Crimean War, he became Commander of the British Troops in Canada in 1873.