Mullen is first elected to Seanad Éireann (the Irish Senate) in 2007 for the National University of Ireland constituency, and has been continuously re-elected in 2011, 2016, 2020, and 2025, often topping the poll among NUI graduates. In 2018, he founds the Human Dignity Alliance, an anti-abortion political party. He is also affiliated with the European Christian Political Party (ECPP).
Mullen has built his career around social conservative causes:
Anti-abortion advocacy: He opposes the repeal of the Eighth Amendment and seeks stronger protections for conscientious objection among medical staff.
Opposition to same-sex marriage: He is prominent during the 2015 referendum opposing constitutional changes related to marriage.
Human rights and palliative care: He introduces bills and motions promoting hospice care and the protection of vulnerable adults.
Freedom of conscience and family values: He advocates policies emphasizing parental rights in education, ethical protections, and support for families.
International advocacy: He criticizes human rights abuses in China, the treatment of religious minorities, and European Union (EU) bureaucratic overreach, while seeking Ireland’s engagement on human dignity standards internationally.
A lifelong practicing Roman Catholic, Mullen emphasizes the principle of human dignity in both politics and daily life, integrating faith and reason in his ethical framework. He maintains a connection to Irish culture and the Irish language, and has engaged in public discussions on moral and social issues, grounding his positions in Catholic teaching without seeking to impose religious law.
In summary, Mullen is a long-standing independent Irish senator influential in debates on social policy, ethics, and human rights. His career is marked by consistent advocacy for pro-life positions, family integrity, and freedom of conscience, alongside active engagement in European and international policy discussions on human dignity and social justice.
In 1956, Whitaker is appointed Secretary of the Department of Finance, at the age of thirty-nine. His appointment takes place at a time when Ireland’s economy is in deep depression. Economic growth is non-existent, inflation apparently insoluble, unemployment rife, living standards low and emigration at a figure not far below the birth rate. He believes that free trade, with increased competition and the end of protectionism, will become inevitable and that jobs will have to be created by a shift from agriculture to industry and services. He forms a team of officials within the department which produce a detailed study of the economy, culminating in a plan recommending policies for improvement. The plan is accepted by the government and is transformed into a white paper which becomes known as the First Programme for Economic Expansion, and quite unusually is published with his name attached in November 1958. The programme becomes known as the “Grey Book” which many argue brings the stimulus of foreign investment into the Irish economy. However, other reforms such as the Department of Industry and Commerce‘s export profits tax relief introduced in 1956, are opposed by Whitaker.
In 1977, Taoiseach Jack Lynch nominates Whitaker as a member of the 14th Seanad. He serves as a Senator from 1977 to 1981, where he sits as an independent member.
In 1981, Whitaker is nominated to the 15th Seanad by Taoiseach Garret FitzGerald, where he serves until 1982. FitzGerald also appoints him to chair a Committee of Inquiry into the Irish penal system, and he chairs a Parole Board or Sentence Review Group for several years.
Whitaker also serves as Chancellor of the National University of Ireland (NUI) from 1976 to 1996. He was also President of the Royal Irish Academy (RIA) and as such, a member of the Board of Governors and Guardians of the National Gallery of Ireland, from 1985 to 1987. He has a very strong love for the Irish language throughout his career and the collection of Irish poetry, An Duanaire: Poems of the Dispossessed 1600–1900, edited by Seán Ó Tuama and Thomas Kinsella is dedicated to Whitaker. From 1995 to 1996 he chairs the Constitution Review Group, an independent expert group established by the government, which publishes its report in July 1996.
Whitaker receives many national and international honours and tributes for his achievements during his lifetime, most notably the conferral of “Irishman of the 20th Century” in 2001 and Greatest Living Irish Person in 2002. In November 2014, the Institute of Banking confers an Honorary Fellowship on him and creates an annual T. K. Whitaker Scholarship in his name. In April 2015, he is presented with a lifetime achievement award by University College Dublin‘s Economics Society for his outstanding contribution to Ireland’s economic policy.
In November 2016, to mark his centenary year, Dún Laoghaire–Rathdown County Council acknowledges Whitaker’s “outstanding and progressive contribution to Irish public service and to society.” The Cathaoirleach of Dún Laoghaire–Rathdown, Cormac Devlin, presents a special award to Whitaker which is accepted by Ken Whitaker on behalf of his father.
Whitaker marries Nora Fogarty in 1941 and they have six children. After his wife’s death in 1994, he remarries, to Mary Moore in 2005. The couple is invited to Áras an Uachtaráin in 2006 for his 90th birthday by the President of IrelandMary McAleese. Mary Moore Whitaker dies in 2008. T. K. Whitaker turns 100 in December 2016 and dies a month later on January 9, 2017, having survived both of his wives. He is buried at Shanganagh Cemetery, Shankill, Dublin.
Dinneen is a leading figure in the Irish Texts Society, publishing editions of Geoffrey Keating‘s Foras Feasa ar Éirinn, poems by Aogán Ó Rathaille, Piaras Feiritéar, Tadhg Gaelach Ó Súilleabháin, and other poets. He also writes a novel and a play in Irish, and translates such works as Charles Dickens‘s A Christmas Carol into Irish. His best known work, however, is his Irish–English dictionary, Foclóir Gaedhilge agus Béarla, which is first published in 1904. The stock and plates of the dictionary are destroyed during the Easter Rising of 1916, so Dinneen takes the opportunity to expand the dictionary. A much larger second edition, compiled with the assistance of Liam S. Gógan, is published in 1927. His request to the Irish Texts Society to include Gogan’s name on the title page is refused. Gogan continues to work on the collection of words up to his death in 1979. This complementary dictionary is published online in 2011.
