I won't lie I found this to be quite the slog. Reading it a chapter at a time helped but still found it hard going.
Not sure why, the prose while dated isn't that unusually for a 19th century text, and the information was covered and explained plainly with few examples of jargon or large tables.
Still it it is quite informative on the history of Ireland and the domination of the struggle for land that has made up much of it. I've learnt things about the the Covenant, Scottish colonisation, the Ulster settlements, and even a key reason why the modern USA is dominated by WASPs from reading this work.
Was very surprised to see Trevelyan and Russell praised in the chapter on the famine, history has essentially gone on to expose the pair and their commitment to laissez-faire economics and hostility to government intervention that was the principle cause for the deaths and starvation. Though given how often the book singles out Tory governments and opens with praise for Gladstone I suspect political bias.
Worth looking at for reference material.