Yes, Southport is in Lancashire.
I do recall reading or hearing about an earlier edition (maybe the Warfrog edition or a playtest version?) where the map of Lancashire included Clitheroe instead of Colne, and that this was changed to avoid possibly embarassing mispronunciation of the the esteemed Ribble Valley market town. Don't know if this is true.
That's an urban myth based on the premise that Americans can't pronounce Worcester let alone other common English towns. There is no connection of either type from Burnley to Clitheroe IRL....