The United Irishman was an Irish nationalist newspaper co-founded by Arthur Griffith and William Rooney. It was first published on the 4th of March 1899 and ran from 1899 to 1906. Contributors included Oliver St. John Gogarty, Padraig Pearse, Maud Gonne and Roger Casement. The writer James Joyce is quoted as saying about the United Irishman was the only newspaper of pretensions in Ireland. In 1906 the United Irishman collapsed under a libel suit and was refounded as Sinn Féin, which ran until 1914 when it was suppressed by the British government.
A Most Seditious Lot: The Militant-Separatist Press 1896-1916, The Irish Republic website