Ronan Moore, author of Irishology, has created a humorous and irreverent guide to every county in Ireland: Galway, where rainfall is measured not in millimetres but in days; Limerick which is ‘a little like the Keyser Soze of Irish counties with a name far more notorious than the place ever was’; and of course Fermanagh, which regularly tops the list of Irish counties that people forget when trying to name all 32