The death has taken place of Mr Proinsias Mac Aonghusa (70), a former broadcaster and writer and a key figure in the Irish language movement.
He was married to the Supreme Court judge, Ms Justice Catherine McGuinness.
Mr Mac Aonghusa was president of Conradh na Gaeilge for six years and also served as chairman of Bord na Gaeilge. He served on the Arts Council from 1982-1984 and from 1989-1998.
Mr Mac Aonghusa was born into a Fianna Fáil family in Rosmuc, west Galway and it was said he was 11 before he learned to speak English. He began his broadcasting career with Radio Éireann in 1952 and worked for RTÉ, the BBC and UTV.
He presented programmes such as Aer Iris and An Fear Agus a Scéal but is best remembered as a presenter and editor of Féach, a popular RTÉ current affairs programme. He wrote several books on politics and history, in Irish and English, and was a regular contributor to magazines and newspapers.
Mr Mac Aonghusa was a prominent member of the Labour Party in the 1960s and briefly held the post of vice-chairman. He ran unsuccessfully for the Dáil as a Labour candidate in Louth in 1965 and was later controversially expelled from the party for what he said was his "radical socialist outlook". He later stood as an Independent candidate in Dún Laoghaire-Rathdown but did not win a seat.
In 1975, he was appointed by the UN to work as a special consultant with Seán MacBride, then UN Commissioner for Namibia.
He was a close friend of former taoiseach Mr Charlie Haughey and regularly supported him in his columns in Anois and the Sunday Press.
In 1992, he generated calls for his dismissal from Bord na Gaeilge when he called on "every respectable nationalist" in west Belfast to vote for Mr Gerry Adams in the Westminster election.
Yesterday, Mr Bob Collins, RTÉ's director general, said Mr Mac Aonghusa was "one of the most significant broadcasters in Irish on both media. His flagship programme Iris was innovative, imaginative and way ahead of its time."
Mr Mac Aonghusa is survived by his wife and their three children, Caitríona, Donal and Diarmaid.
The removal arrives at Monkstown parish church at 5.30 p.m. this evening. The funeral will be held at the church at 10.30 a.m. tomorrow and afterwards to Mount Jerome crematorium.
