Prince Frederik of Luxembourg, the youngest son of Prince Robert of Luxembourg and Princess Julie of Nassau, has died after a lifelong battle with a rare genetic disorder known as POLG ...

Prince Frederik, the youngest son of Prince Robert of Luxembourg and Princess Julie of Nassau, died at age 22 on March 1 from the rare genetic condition POLG Mitochondrial disease.

Prince Frederik, the youngest son of Prince Robert of Luxembourg and Princess Julie of Nassau, left behind a lasting legacy following his death at age 22 this month. The beloved royal died on ...

Prince Frederik, son of Prince Robert of Luxembourg, has died from a rare genetic disease, his father announced.He was 22. Robert and his wife, Princess Julie of Nassau, announced Frederik's death ...