When the whole trend of "irony has only one meaning" start? Every dictionary I've looked at includes something like "incongruity between the actual result of a

When the whole trend of "irony has only one meaning" start? Every dictionary I've looked at includes something like "incongruity between the actual result of a sequence of events and the normal or expected result" (I've got an old Webster's New World from the 40's that gives the example "it was an irony of fate that the fireboat burned and sank, which is exactly the kind of thing that a certain type of person claims is "coincidence, not irony"). Is it all down to that one episode of Futurama?