If it's Belfast it has to be Milltown Cemetery: however the song, which for some reason I associate with McAreavey, ranges in geography and history from Belfast to Dublin, from the Civil War to the 40s (19 year-old Tom Williams, the only republican of modern times to be executed in the north, Belfast in 1942) and possibly later. It seems to be a general tribute to many republican martyrs. I have a recording of the song on the "Patriotic Names" double CD referred to on the Michael Collins Statue thread of a few months ago. Thanks Widowmaker for the words which aren't always that easy to make out, especially where personal names are concerned.