Interesting to see that on the rediscovery of Herculaneum there was some debate which city had been found. It was not immediately clear. Some thought that it was Pompeii, others thought that it was Retina/Resina:
Upon this discovery, there was a variety of Opinions among the Learned about the ancient Name of this City. Some would have it to be Pompeja; others, upon the Credit of Camillo Pellegrino maintained that it was Retina of which Pliny makes mention in a Letter he wrote to Cornelius Tacitus giving him an Account of all the Circumstances attending his Uncle's Death. This last Opinion appears the more plausible, as this City stands in the same Situation which Pliny the younger assigns to Retina.
Memoirs concerning Herculaneum, 1750.