Portal:Belgium/Anniversaries/August/August 4

• 1113: death of Gertrude of Saxony, wife of Robert I, Count of Flanders, mother of Robert II and mother-in-law of Philip I of France
• 1900: death of Etienne Lenoir, inventor
• 1906: birth of Marie-José of Belgium, last Queen of Italy
• 1906: death of Joseph Tilly, mathematician, inventor of non-Euclidean mechanics
• 1914 - World War I: Germany invaded Belgium, thus violating Belgian neutrality; in response, the United Kingdom declares war on Germany