The Royal Northumberland Fusiliers was an infantry regiment of the British Army. Raised in 1674 as one of three 'English' units in the Dutch Anglo-Scots Brigade, it accompanied William III to England in the November 1688 Glorious Revolution and became part of the English establishment in 1689. In 1751, it became the 5th Regiment of Foot, with the regional title 'Northumberland' added in 1782; in 1836, it was designated a Fusilier unit and became the 5th (Northumberland Fusiliers) Regiment of Foot. After the 1881 Childers Reforms, it adopted the title Northumberland Fusiliers, then Royal Northumberland Fusiliers on 3 June 1935. In 1968, it was amalgamated with the Royal Fusiliers (City of London Regiment), the Royal Warwickshire Fusiliers and Lancashire Fusiliers to form the present Royal Regiment of Fusiliers. History Formation to end of 17th century Although briefly designated as 'Irish' when raised in January 1675, the regiment was listed as one of three 'English' units in the Dutch Anglo-Scots Brigade, a mercenary formation whose origins went back to 1586. During the 1672-1678 Franco-Dutch War, it took part in the unsuccessful Siege of Maastricht and the battles of Cassel and Saint-Denis. It accompanied William III to England in the November 1688 Glorious Revolution, before transferring onto the English establishment in 1689. Like most regiments, until 1751, when it was designated the 5th Regiment of Foot, it was named after the current colonel. Founded by Daniel O'Brien, 3rd Viscount Clare, it began life as Viscount Clare's Regiment, then Sir John Fenwick's, followed by Patrick Westley in 1676. When transferred onto the English establishment, it was commanded by Thomas Tollemache who was replaced in May 1689 by Edward Lloyd. Posted to Ireland for the 1689-1691 Williamite War, it fought at the Battle of the Boyne, the Second Siege of Athlone and the 1691 Siege of Limerick. Following the October 1691 Treaty of Limerick, it was sent to Flanders for the duration on the Nine Years War. Lloyd died in 1694 and replaced as Colonel by Thomas Fairfax; during the 1695 Siege of Namur, it formed part of Vaudémont's screening force. When the war ended with the 1697 Treaty of Ryswick, it avoided disbandment by being made part of the Irish garrison. The 18th century The regiment remained in Ireland for the first part of the War of the Spanish Succession, before being sent to Portugal in 1707 as part of the army under