Brendan Behan was an Irish writer known for plays and books in both English and Irish. He was born in 1923 into a republican family and imprisoned at age 16 for his IRA involvement. His most famous play, The Quare Fellow, was first produced in Dublin and later in London, bringing him success. He wrote extensively in both English and Irish, including his acclaimed autobiography The Borstal Boy. However, he struggled with alcoholism which contributed to his early death in 1964.