I have previously written an article about Michael Byrne, who was a passenger on the Lusitania when it sank in 1915. After surviving the attack he made his way to Paulstown to stay with relations. You can read the full article here.
More specific genealogical information about Michael Byrne can be found on a website that has transcribed records from the Registration of Americans Citizens forms that were filed at the United States Consulates in Ireland.
The entry states that he was born on 15 May 1868 in the Carrick-on-Suir area of Co. Tipperary. He married Herminie Rushman who was born at Numberg (Nuremberg?), Germany. The reason for his trip on the Lusitania was ‘commerical business’.
 Unknown, Sheila, compiler. Irish Gleanings to Connect People to Townlands in Ireland; Registration of Americans Citizens forms that were filed at the United States Consulates in Ireland http://sites.google.com/site/irishgleanings/home/american-registration-documents : accessed 28 December 2011