The original Sinn Féin organisation was founded in 1905 by Arthur Griffith, but has split substantially on a number of occasions since then, notably giving rise in the aftermath of the Irish Civil War to the two traditionally dominant parties of southern Irish politics: Fianna Fáil, and Cumann na nGaedheal (now Fine Gael). The contemporary Sinn Féin party took its form in 1970 after another split (with the other faction eventually becoming the Workers' Party of Ireland) and was historically associated with the Provisional Irish Republican Army (IRA). Mary Lou McDonald became party president in February 2018.