Editorial Fellow Prince Frederik of Luxembourg, the youngest son of Prince ... Rare Disease Day—of a rare genetic disease known as POLG. His father announced his passing on March 7 in a ...

Despite its humble presence within Europe, Luxembourg is home to a thriving family of modern royals. But even the grand ducal ...

A medical breakthrough could result in the first treatment for rare but serious diseases in which genetic defects disrupt ...

Kate Middleton and Prince William celebrated their son Prince Louis’ seventh birthday by unveiling his annual portrait, this ...

Prince William and Kate Middleton and their kids Prince George, Princess Charlotte and Prince Louis did not attend the Royal ...

Look at Prince Louis’ gap-toothed grin! Prince William and Kate Middleton’s youngest child showed off his missing baby teeth in his 7th birthday portrait, released via social media Wednesday.

Frederik and Mary's eldest child, Crown Prince Christian, 19, is acting as regent while his father is abroad. The future king is currently in military training with the Guard Hussar Regiment in ...

Prince William and Kate Middleton's youngest son celebrates his birthday on April 23 OLI SCARFF/AFP via Getty Prince Louis is growing up fast! The youngest son of Prince William and Kate Middleton ...

Kate Middleton and Prince William kept their tradition of sharing a birthday photo of their youngest son, just like they do with Prince George and Princess Charlotte Stephanie Petit is a Royals ...

Prince Al-Waleed of Saudi Arabia, known as the ‘Sleeping Prince’, has been in a coma since a 2005 car accident while studying at a military college. Prince Al-Waleed bin Khaled bin Talal, a ...

Prince William and Kate Middleton skipped the royal family’s annual Easter celebration at St. George’s Chapel this year, instead opting to spend time with their kids. And apparently the palace ...