Meinhardt Schomberg, 3rd Duke of Schomberg, Duke of Leinster, KG (30 June 1641 – ), was a general in the service of Willem, Prince of Orange and Stadtholder of Holland, later King William III of England. He fought in the Franco-Dutch War, then played a crucial role at the Battle of the Boyne in July 1690 during the Williamite War in Ireland and finally commanded the British troops deployed to Portugal during the War of the Spanish Succession. Military career Born the son of Frederick Schomberg, 1st Duke of Schomberg (who was of Huguenot descent), and Johanna Elizabeth de Schomberg (née von Schönberg), Meinhardt Schomberg joined his father in the service of the English Expeditionary brigade to Portugal and served as a lieutenant-colonel and then as a colonel. He then settled in La Rochelle with his father and became a French subject. He attained the rank of brigadier and, afterwards, maréchal de camp (major general), during the Franco-Dutch War in 1678. He fought under Marshal François de Créquy at the Battle of Kochersburg in October 1677, the Battle of Freiburg im Breisgau on 14 November 1677, at the Battle of Rheinfelden in July 1678 and at the Battle of Kinzing later that month, before serving under Frederick William, Elector of Brandenburg as a general of cavalry. He travelled to England in Spring 1689 and was made colonel of Lord Cavendish's Regiment of Horse on 10 April 1690 and commissioned a general of the horse on 19 April 1690. He served under his father during the Williamite War in Ireland, fighting against the Jacobite Irish Army. Frederick Schomberg was second in command of William's army at the Battle of the Boyne in July 1690. Meanwhile, Meinhardt Schomberg commanded the right wing of William's army during the battle and led the crucial crossing of the River Boyne at Roughgrange near Rosnaree on the Jacobites' flank, the turning point in the confrontation, despite a gallant defence by Sir Neil O'Neill, a Jacobite general. Schomberg then engaged in a pursuit of the retreating troops towards Duleek: there were no casualties amongst his regiment's soldiers. Schomberg's father died during the latter stages of the Battle which resulted in a decisive Williamite victory. Meinhardt Schomberg was created Duke of Leinster for his part in the Battle on 30 June 1690 and, after taking part in the abortive Siege of Limerick in August 1690, he became a