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https://stairnaheireann.net/2016/10/10/1918-over-five-hundred-die-in-the-irish-sea-following-the-sinking-of-the-r-m-s-leinster-by-u-boat-123-2/
1918 – Over five hundred die in the Irish sea following the sinking of the R.M.S. Leinster by U-boat 123