Brian O'Nolan, Irish author and playwright (died 1966)

Brian O'Nolan, whose pen names included Flann O'Brien, was an Irish civil service official, novelist, playwright and satirist, who is now considered a major figure in twentieth-century Irish literature. Born in Strabane, County Tyrone, he is regarded as a key figure in modernist and postmodern literature. His four English-language novels, including At Swim-Two-Birds and The Third Policeman, were published under the pen name Flann O'Brien. His many satirical columns in The Irish Times and an Irish-language novel, An Béal Bocht, were written under the name Myles na gCopaleen.

October 5 is the 278th day of the year in the Gregorian calendar; 87 days remain until the end of the year.