Jean Philippe Eugène de Mérode
Jean-Philippe-Eugène de Merode was the only surviving child of Maximilian de Merode and Isabella-Margaretha de Merode. His father died one year after his birth and his mother remarried with the Joachim Ernest II, Duke of Schleswig-Holstein-Rethwisch. This was an army commander who guided Jean-Philippe towards a military career. At the age of five Jean-Philippe was already present at the siege of Oran in Northern-Africa.
During the consecutive wars which raged in the Spanish Netherlands, Jean-Philippe switched sides a few times to maintain his possessions. First he and his Regiment of Westerloo served the anti-French coalition under King William III of England and King Charles II of Spain. In 1694 he was made Knight in the Order of the Golden Fleece.
During the War of Spanish Succession he served the new Bourbon King Philip V of Spain, and fought on the side of the French and Bavarians under Maximilian II Emanuel, Elector of Bavaria, new governor of the Southern Netherlands. He played an important role in the Battle of Eckeren in 1703.
The next year he fought in the Battle of Blenheim on the side of the French under Tallard and Marsin. The battle was a great defeat and Mérode narrowly escaped death.
After the battle, Mérode retired to his castles in Westerlo, Pietersheim and Merode. From then on he served the new rulers of the Southern Netherlands : the Austrian Emperors Joseph I and Charles VI. In 1717 he was rewarded with the title of Field Marshal.
Marriage and children 
He married first in 1701 in Bayonne in 1701 with Maria-Theresia de Aragon y Pignatelli, daughter of Nicolas Pignatelli, Duke de Monteleone and Viceroy of Sardinia. They had three children of whom only Isabella-Marie (1703-1780) survived infancy, marrying a Count Czernin.
Maria-Theresia died of Smallpox on 9 August 1718.
Merode married again on 29 September 1721 with Princess Charlotte Wilhelmine Amalie Alexandrina (1703–1740), daughter of Francis Alexander, Prince of Nassau-Hadamar.
- Jean-Guillaume-Augustin (16 June 1722 - 7 January 1763), married Eléonore de Rohan, daughter of Charles de Rohan, Prince of Rochefort (1728-1792),
- Johanna-Christina (7 May 1724 - ?), a nun in Maubeuge.
- Marie-Elisabeth-Félicité (2 July 1728 - ?), a nun in Thorn Abbey.
- Philippe-Maximilien (4 July 1729 - 25 January 1773), married Marie Catherine de Merode-Montfort (1743-1794), had offspring.
- Maria-Theresia (8 June 1730 - ?)
- Maria-Josepha (21 February 1730 - ?)
Jean-Philippe-Eugène de Merode-Westerloo is best remembered for his memoirs, which were published by his grandson, and which are a valuable source of information on the Battle of Blenheim, as seen from the side of the defeated.
- Jean-Philippe-Eugène de Merode-Westerloo: Mémoires de Feld-Maréchal Comte de Merode-Westerloo, Chevalier de la Toison d'Or, Capitaine de Trabans de l'Empereur Charles VI. - 2 Volumes, Brussels, 1840
- David Chandler (Hg.): Military Memoirs of Marlborough's Campaigns, 1702–12. - London: Greenhill Books, 1998; ISBN 1-85367-330-7 - has extracts of the Count's memoires.