Francis R Shackleton

Francis R Shackleton, the brother of the famed Antarctic explorer Sir Ernest Shackleton, was implicated posthumously by Sir Arthur Vicars in the unsolved mystery of the stolen Irish crown jewels. Despite being named as a suspect in Vicars' will, Shackleton's involvement in the heist remains a matter of speculation, as the jewels have never been recovered and the true culprits were never identified.