Prince Frederik, 22, was a founder and the creative director of a foundation that raised awareness of POLG disorder.

A young member of the Luxembourg royal family has passed away from a rare genetic disorder affecting his mitochondria.

After his father's accession to the throne in 2000, Guillaume became the Hereditary Grand Duke of Luxembourg. The Prince is married to Stéphanie, whom he shares sons Prince Charles and Prince ...

is the first cousin of Grand Duke Henri of Luxembourg, 69, who in December announced his shock abdication from the throne in favour of his son Guillaume. Guillaume, 43, who had already assumed ...

Grand Duke Henri and Grand Duchess Maria Teresa celebrate a very special occasion on the day of the love. The Luxembourg royals ... When he was Hereditary Grand Duke, Henri met Cuban-born Maria ...