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
Rúaidhrí de Valera 1947, de Valera became the Archaeological Officer for Ordnance Survey Ireland which permitted him to develop the Survey of the Megalithic Tombs of Ireland project. He went on to write significant papers on Irish prehistory which contributed to his doctorate, awarded in 1954. In 1957, de Valera was appointed Chair of Celtic Archaeology at University College Dublin where he worked to enlarge the department whilst continuing to publish on Irish chamber tombs, especially the Court cairns which he proposed first developed in the west of the country. De Valera later excavated at the Mound of the Hostages at Tara. He