Irish Parliamentary Party first Governor-General of the Irish Free State (1922–1928), an enlightened choice to bridge the gap between the old order and the new generation of Cumann na nGaedheal politicians, although highly partisan (his nephew was Minister for Justice Kevin O'Higgins; Healy made a public attack on Fianna Fáil and Éamon de Valera, which led to republican calls for his resignation). Former party MP Hugh Law was elected as a Cumann na nGaedheal TD during the 1920s. The conservative nationalist National League Party operated between 1926 and 1931, founded by former IPP MPs Captain William Redmond (son of Irish National League and
Éamon de Valera the work of Michael Collins and based on three sources: British oaths in the dominions, the oath of the Irish Republican Brotherhood and a draft oath prepared by de Valera in his proposed Treaty alternative, "Document No. 2"). De Valera began a legal case to challenge the requirement that members of his party take the Oath, but the assassination of the Vice-President of the Executive Council (deputy prime minister) Kevin O'Higgins on 10 July 1927 led the Executive Council under W. T. Cosgrave to introduce a Bill on 20 July requiring all Dáil candidates to promise on oath that if