Marie-Adélaïde was a notable figure in the early 20th century, known for her role as the Grand Duchess of Luxembourg. Born on February 14, 1894, she was the daughter of Prince Guillaume of Luxembourg and Princess Marie-Anne of Portugal. Her reign began in 1912 and lasted until her abdication in 1919, during a time of significant political change in Europe. During her time as Grand Duchess, Marie-Adélaïde was involved in various social and charitable initiatives, particularly during World War I. She was known for her dedication to the welfare of her people and her efforts to support the war effort. After her abdication, she lived in exile and passed away on January 24, 1924.