François le Clerc was a real pirate, although he died in the Azores, not in the Caribbean.
Actors Pip Torrens, Michael Brandon, Bryan Dick, Jonathan Cake and Ben Miller were all acted in Marple (2004) episodes.
Actors Bryan Dick, Gary Carr & Rob Heanley have all been on Foyle's War (2002). Carr & Heanley both starred in season 6.