There are manhole covers in Copenhagen that make reference to H.C. Andersen but he didn't actually have anything to do with them, it was more in the form of a thing to make tourists feel they were somewhere cool.

I might accept some continuity from now back to the time of Garibaldi for Italy as a whole (but then we have to write some notable periods off as aberrations) - As for Florence I would accept going back to Napoleonic times but from there the continuity of government was surely broken.