<P> The Grand Duke of Luxembourg is the monarchical head of state of Luxembourg . Luxembourg has been a grand duchy since 15 March 1815 , when it was elevated from a duchy , and was in personal union with the United Kingdom of the Netherlands until 1890 under the House of Orange - Nassau and is the world 's only sovereign grand duchy . Since 1815 , there have been nine monarchs of Luxembourg , including the incumbent , Henri . </P>
<P> The Grand Duke of Luxembourg is the monarchical head of state of Luxembourg . Luxembourg has been a grand duchy since 15 March 1815 , when it was elevated from a duchy , and was in personal union with the United Kingdom of the Netherlands until 1890 under the House of Orange - Nassau and is the world 's only sovereign grand duchy . Since 1815 , there have been nine monarchs of Luxembourg , including the incumbent , Henri . </P>
who is the head of state in luxembourg
who is the head of state in luxembourg
The Grand Duke of Luxembourg
The Grand Duke of Luxembourg