Field Marshal John Byng, 1st Earl of Strafford GCB, GCH, PC (Ire) (1772 – 3 June 1860) was a British Army officer and politician. After serving as a junior officer during the French Revolutionary Wars and Irish Rebellion of 1798, he became Commanding Officer of the Grenadier Battalion of the 3rd Regiment of Foot Guards during the disastrous Walcheren Campaign. He served as a brigade commander at the Battle of Vitoria and then at the Battle of Roncesvalles on 25 July 1813 when his brigade took the brunt of the French assault and held its position for three hours in the early morning before finally being forced back.