P rince Frederik of Luxembourg, the youngest son of Prince Robert of Luxembourg and Princess Julie of Nassau, died in Paris at age 22 on March 1—a day after Rare Disease Day—of a rare genetic disease ...

Prince Frederik, the youngest son of Prince Robert of Luxembourg and Princess Julie of Nassau, died at age 22 on March 1 from ...

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

Prince Frederik of Luxembourg died at 22 after years of struggling with the rare mitochondrial disease PolG, according to a statement issued by his parents, Prince Robert and Princess Julie, on Monday ...

Prince Frederik of Luxembourg, who died at 22, spoke about the rare genetic disorder he navigated in a video released by The PolG Foundation he founded.

The filmmaker who chronicled Prince Frederik of Luxembourg’s battle with the rare genetic disorder PolG has shared her experience working with the royal, who passed away on Mar. 1 at 22.

Queen Mary of Denmark has made her mark in the fashion capital of the world, putting on a very stylish display on the first ...

King Frederik and Princess Josephine watched Denmark's UEFA Nations League quarter-final leg match against Portugal at Parken ...

Queen Mary and King Frederik of Denmark are again breaking with tradition in a show of unity, with their use of a joint royal ...