Although it's not quite as common as it once was, actors taking on stage names is a time-honoured tradition.

Far into the past, actors changed their names so as no to disgrace their families, but in the more recent past, actors have opted for stage names for a variety of reasons - from trying to shed family connections and forge their own path, such as Nicolas Cage born Nicolas Coppola, to simply trying to navigate an industry that baulks at the idea of ethnic-sounding names.

In any case, these 10 actors have all adopted stage names for whatever reason, and all you've got to do is figure out which is which. You've got 90 seconds on the clock, so you won't even have a chance to cheat or look up Google.

Good luck!