Trim by name, not by nature, for this sprawling mass of old masonry known as Trim Castle cries out for Hugh de Lacy, its original owner, to come back from the grave and set things right. One of its modern claims to fame is that it appeared in the film Braveheart, with Mel Gibson. In the old days it was chosen because it overlooked a fording point of the Boyne river, and is not far from the Hill of Tara (which can be seen from its ramparts) and Kells, where the infamous book of the same name was discovered. An atmospheric place that can still evoke the odd shiver of fear…