When Forbes published its list of the year’s top-earning dead celebrities, we set ourselves a challenge.

If everyone is separated by six degrees (or less), shouldn’t it be possible to link every name on the list in a single map?

The ranking, topped by Elvis Presley, includes 13 people - musicians, actors, a cartoonist, a children’s author, an artist and a Nobel Prize winner. Their birth years span nearly a century, from 1879 to 1971.