Prompted by young F's fascination with the subject, I bought this from the remainder pile in the University Bookshop in Belfast the other day. Given the extreme paucity of sources, Kelly has done a very good job - she makes the most of what few records there are, signals clearly where there is disagreement in the secondary literature, and is honest about the extent to which she is arguing evidence of absence from absence of evidence. It builds up into a convincing story: the 1348-50 outbreak of plague was devastating to Leinster and Munster, and much less so to Ulster and Connacht; and in particular it was devastating to the towns and communities of Anglo-Irish settlement, some of which never recovered - she estimates the pre-plague population of New Ross, Co
The result of this was a depopulated and reduced area of English control in Ireland, retreating into the Pale, and an effective decentralisation of power to the Gaelic and Anglo-Irish chieftains and intensification of warfare between them, all in the context of a devastated economy - merchants and sailors were especially badly hit, so trade effectively vanished, and meanwhile the price of labour soared, and the plague had literally killed off any chance of importing workers from England. The Irish population may not have returned to pre-plague levels until the 18th century. If anything Kelly slightly undersells the huge impact of the plague on Ireland, given the evidence she presents.
Kelly mainly draws on administrative and archaeological evidence, but there are a couple of personalities who stand out. One is Richard FitzRalph, the Archbishop of Armagh, who preached fiery sermons while worrying about church administration (especially staffing levels, for obvious reasons). The other is Friar John Clyn of Kilkenny, who chronicled the advance (and symptoms) of the plague from the Dublin ports across Leinster, seeing it as the end of civilisation and the first step of the apocalypse, before himself falling victim to it; the closing words of his chronicle, written perhaps when he already knew he was ill, are poignant.
Anyway, a good book, though I have a serious complaint about the index which has completely inaccurate page numbers.