شين فين
It arose as the original Sinn Féin organisation founded in 1905 by Arthur Griffith, but took its current form in 1970 following a division within the party, in which it was the larger faction. This majority group continued under the same leadership as Sinn Féin (Gardiner Place) or Official Sinn Féin, while the breakaway group became known as Sinn Féin (Kevin Street) or Provisional Sinn Féin (giving rise to the contemporary party known as Sinn Féin). The party name was changed to Sinn Féin – The Workers' Party in 1977 and then to the Workers' Party in 1982.