Brian O'Nolan (Irish: Brian Ó Núalláin) (October 5, 1911 – April 1, 1966) was a twentieth century Irish novelist and satirist, best known for his novels An Béal Bocht, At Swim-Two-Birds and The Third Policeman written under the nom de plume Flann O'Brien. He also wrote many satirical columns in the Irish Times under the name Myles na gCopaleen. Most of O'Nolan's writings were occasional pieces published in periodicals, which explains why his work has only recently come to enjoy the considered attention of literary scholars.

Early Writings
O'Nolan wrote prodigiously during his years as a student at University College Dublin, contributing to the student magazine Comhthrom Féinne (Fair Game) under various guises, in particular the pseudonym Brother Barnabas. Significantly, he composed a story during this same period entitled "Scenes in a Novel (probably posthumous) by Brother Barnabas", which anticipates many of the ideas and themes later to be found in his novel, At Swim-Two-Birds.

In it, the putative author of the story finds himself in riotous conflict with his characters, who are determined to follow their own paths regardless of the author's design. For example, the villain of the story, one Carruthers McDaid, intended by the author as the lowest form of scoundrel, "meant to sink slowly to absolutely the last extremities of human degradation", instead ekes out a modest living selling cats to elderly ladies and becomes a covert churchgoer without the author's consent. Meanwhile, the story's hero, Shaun Svoolish, chooses a comfortable, bourgeois life rather than romance and heroics:

'I may be a prig', he replied, 'but I know what I like. Why can't I marry Bridie and have a shot at the Civil Service?' 'Railway accidents are fortunately rare', I said finally, 'but when they happen they are horrible. Think it over.'

In 1934 O'Nolan and his student friends founded a short-lived magazine called Blather. The writing here, though clearly bearing the marks of youthful bravado, again somewhat anticipates O'Nolan's later work, in this case his Cruiskeen Lawn column as Myles na gCopaleen: Blather is here.

As we advance to make our bow, you will look in vain for signs of servility or of any evidence of a desire to please. We are an arrogant and depraved body of men. We are as proud as bantams and as vain as peacocks. Blather doesn't care. A sardonic laugh escapes us as we bow, cruel and cynical hounds that we are. It is a terrible laugh, the laugh of lost men. Do you get the smell of porter?

Flann O'Brien novels have attracted a wide following for their bizarre humour and Modernist metafiction. At Swim-Two-Birds works entirely with borrowed (and stolen) characters from other fiction and legend, on the grounds that there are already far too many existing fictional characters, while The Third Policeman has a superficial plot about an Irish country youth's vision of hell, played against a satire of academic debate on an eccentric philosopher, and finds time to introduce the atomic theory of the bicycle.

The Dalkey Archive features a character who encounters a penitent, elderly James Joyce (who never wrote any of his books and seeks only to join the Jesuit Order) working as a busboy in the resort of Skerries and a scientist looking to suck all of the air out of the world. Other books by Flann O'Brien include The Hard Life (a fictional autobiography meant to be his "misterpiece"), and An Béal Bocht, (translated from the Irish as The Poor Mouth), which was a parody of Tomás Ó Criomhthain's autobiography An t-Oileanach.

Source:http://en.wikipedia.org