1955 - Henri, Grand Duke of Luxembourg, the head of state of Luxembourg was born at Betzdorf Castle in Luxembourg on the 16th of April. The eldest son of Grand Duke Jean of Luxembourg and Grand Duchess Joséphine-Charlotte (née Princess Joséphine-Charlotte of Belgium). His maternal grandparents were King Leopold III and Queen Astrid of Belgium and Princess of Sweden.
1974 - Was educated in Luxembourg and in France, where he obtained his baccalaureate.
1980 - Studied and graduated political sciences at University of Geneva. The Grand Duke also undertook military officer training at the Royal Military Academy in Sandhurst, England.
1981 - Whilst studying in Geneva, Henri met Maria Teresa Mestre y Batista, who was also a political sciences student. Despite the reported disapproval of Henri's mother (who was said to have wanted her son to marry a fellow royal), Henri and Maria Teresa were married in Luxembourg on the 14th of February.
- Prince Guillaume, Hereditary Grand Duke of Luxembourg born on the 11th of November. 1984 - Prince Félix of Luxembourg born on the 3rd of June.
1986 - Prince Louis of Luxembourg born on the 3rd of August.
1991 - Princess Alexandra of Luxembourg born on the 16th of February.
1992 - Prince Sébastien of Luxembourg born on the 16th of April.
1998 - Appointed as Lieutenant Representative by his father, Grand Duke Jean, meaning that he assumed most of his father's constitutional powers on the 4th of March.
2000 - Immediately following the abdication of Grand Duke Jean, Henri acceded as Grand Duke of Luxembourg and took the constitutional oath before the Chamber of Deputies later that day on the 7th of October.
2001 - Grand Duke Henri and Grand Duchess Maria Teresa undertook their first foreign state visit to Spain, at the invitation of King Juan Carlos and Queen Sofia on the month of May.
2006 - His grandson Gabriel, son of Prince Louis, was born on the 12th of March.
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