 Complete the following phrase:  Field Marshal John Byng, 1st Earl of Strafford 1772  3 June 1860, of 6 Portman Square, London, of Ballaghy, Londonderry and latterly of Wrotham Park in Middlesex now Hertfordshire, and of 5, St Jamess Square, London, 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 