Prince William and Prince Harry's 20-year-old cousin Rosie Roche tragically died from a "traumatic head injury" on July 14. Here's everything to know about Rosie Roche, Prince William and Prince Harry's 20-year-old cousin,

Rosie Roch, a cousin to Prince William and Prince Harry, has died at the age of 20, according to multiple outlets.

Rosie Roche, 20, the cousin of Princes William and Harry, was found dead at her family home in Norton, Wiltshire, on July 14. Police have ruled out any third-party involvement