Síle de Valera Dublin, where she qualified as a career guidance teacher. De Valera comes from a famous political family; she is the granddaughter of Éamon de Valera, the founder of Fianna Fáil, former Taoiseach and third President of Ireland. She is a niece of the former TD Vivion de Valera and is a first cousin of Teachta Dála Éamon Ó Cuív. De Valera was first returned to Dáil Éireann in the Fianna Fáil landslide victory at the 1977 general election. She was elected for the Dublin County Mid constituency, which included the Tallaght area of County Dublin, being the youngest TD elected
Éamon de Valera cultural stagnation, while Diarmaid Ferriter argues that the stereotype of de Valera as an austere, cold and even backward figure was largely manufactured in the 1960s and is misguided. Éamon de Valera was born on 14 October 1882 in New York City, the son of Catherine Coll, who was originally from Bruree, County Limerick, and Juan Vivion de Valera, described on the birth certificate as a Spanish artist born in the Basque Country, Spain. His parents were reportedly married on 18 September 1881 at St Patrick's Church in Jersey City, New Jersey, but archivists have not located any marriage certificate