Listed in descending order (according to age), the other children are Edward, Al, Ernest and Mary.
Byrne was born on 5 August 1934 and grew up in Dublin.
At Granada, Byrne became the first person to introduce the Beatles on television when they made their small screen debut on local news programme People and Places.
In 1961, Telefís Éireann (later Radio Telefís Éireann and now Raidió Teilifís Éireann) was set up.
The programme, which is still broadcast, has become the world's second longest running chat show.
The show became a forum where controversial topics such as the influence of the Roman Catholic Church, contraception, abortion, divorce, and other hitherto taboo subjects were discussed openly in Ireland, alongside book reviews, celebrity visits, and music acts like the Boomtown Rats, U2, Sinéad O'Connor, Elkie Brooks, Boyzone, and Noel Gallagher.
He is now best remembered for his two-hour morning show, The Gay Byrne Hour, which was later renamed The Gay Byrne Show (1972–1999).
For many years the show was produced by John Caden.
Since retiring he has become the "Elder Lemon of Irish broadcasting". His most notable role was first host of The Late Late Show over a 37-year period spanning 1962 until 1999.The Late Late Show is the world's second longest-running chat show.Joe Duffy was a reporter on The Gay Byrne Show and subsequently succeeded him as presenter.
Byrne has featured on radio occasionally since retiring from The Gay Byrne Show – in 2006, he began presenting a weekly Sunday afternoon show entitled Sunday Serenade on RTÉ lyric fm.
His time working in Britain with Granada Television saw him become the first person to introduce the Beatles on screen.