Brendan O’Carroll, Irish actor, comedian, director, producer and writer, is born in Finglas, Dublin, on September 17, 1955. He is best known for portraying foul-mouthed matriarch Agnes Brown on stage and in the BBC and RTÉ television sitcom Mrs. Brown’s Boys. In 2015, he is awarded the Irish Film and Television Academy Lifetime Achievement Award for his contribution to Irish television.

O’Carroll is the youngest of eleven children. His mother, Maureen, is a Labour Party TD and his father, Gerard O’Carroll, is a carpenter. His father dies in 1962 when O’Carroll is six years old, and his mother raises the eleven children with little money. He attends Saint Gabriel’s National School and leaves at the age of twelve. He has a string of occupations, including being a waiter and a milkman.

Having become well known as a comedy guest on The Late Late Show, O’Carroll releases four stand-up videos, titled How’s your Raspberry Ripple, How’s your Jolly Roger, How’s your Snowballs and How’s your Wibbly Wobbly Wonder.

O’Carroll writes the screenplay to Sparrow’s Trap, a boxing movie. The film, which has Stephen Rea cast in the lead role, runs into financing difficulties midway through the shoot when the distributor withdraws, and it is abandoned. Incurring debts of over €1 million, he becomes bankrupt, and the film has never been produced.

O’Carroll presents a quiz show called Hot Milk and Pepper on RTÉ One, with long-term collaborator Gerry Browne.

In 1992, O’Carroll performs a short radio play titled Mrs. Brown’s Boys and shortly afterwards he writes four books titled The Mammy, The Granny, The Chisellers and The Scrapper. In 1999, a movie named Agnes Browne, starring Anjelica Huston, is released, based on his book The Mammy. He also co-writes the screenplay. He then decides to put together his own family theatre company, Mrs. Browne’s Boys, and dresses up as a woman to play his part, as the actress he had originally hired did not show up.

From 1999 to 2009, O’Carroll writes and performs in five plays. Since 2011, the stage shows have been re-toured across the UK. In 2011, his plays are adapted into a television sitcom, with the name “Browne” shortened to “Brown.” From its beginning in 2011 through January 2022, 28 episodes have aired, across three series, several Christmas-special episodes and a one-off live episode that aired in 2016 on RTÉ One and BBC One. Mrs. Brown’s Boys D’Movie is released on June 27, 2014, and is a significant success in the UK, staying at number one in the box office for two consecutive weeks. However, the film has negative reviews with one saying it is not just unfunny but “close to anti-funny.” O’Carroll’s wife, his sister Eilish, his son Danny, and his daughter Fiona all appear or have appeared on episodes of Mrs. Brown’s Boys.

It is announced in January 2015 that the BBC wants O’Carroll to do “other stuff,” due to the fact that Mrs. Brown’s Boys has become so successful. He reveals plans to adapt his first ever written play, patser grey, into a television sitcom.

O’Carroll is married to Doreen O’Carroll from 1977 to 1999. He marries Jennifer Gibney in 2005. They live in Davenport, Florida. He has three surviving children: Fiona, Danny, and Eric. Their first son Brendan dies of spina bifida at just a few days old. He has six grandchildren, four children from Fiona and two children from Danny.

O’Carroll’s paternal grandfather, Peter O’Carroll, a father of seven and a prominent republican, is shot dead on October 16, 1920, at his home in Manor Street, Dublin. Two of his sons are Irish Republican Army volunteers. The incident is investigated in the television series Who Do You Think You Are?

In March 2016 O’Carroll appears in the BBC Two documentary Brendan O’Carroll – My Family at War, which explores the involvement of three of his uncles — Liam, James and Peadar O’Carroll — in the Easter Rising.