Éamon de Valera from the controversy. That stance helped return de Valera to power in the 1951 general election, but without an overall majority. His and Fianna Fáil's popularity was short-lived, however; his government introduced severe, deflationary budgetary and economic policies in 1952, causing a political backlash that cost Fianna Fáil several seats in the Dáil in by-elections of 1953 and early 1954. Faced with a likely loss of confidence in the Dáil, de Valera instead called an election in May 1954, in which Fianna Fáil was defeated and a Second Inter-Party Government was formed with John A. Costello again as Taoiseach. On
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