Jehan de Lannoy elder brother of Stéphanie, Grand Duchess of Luxembourg (b. 1966) Parents Count Philippe de Lannoy Alix de Lannoy Children Caroline de Lannoy Maxime de Lannoy Louise de Lannoy Antoine de Lannoy Siblings Countess Natalia de Lannoy Christian de Lannoy Stéphanie, Grand Duchess Consort of Luxembourg Countess Gaëlle de Lannoy Count Olivier de Lannoy Count Amaury de Lannoy Countess Isabelle de Lannoy Partners Béatrice Spates