Brendan —, author of 1958 autobiographical novel Borstal Boy (5)
I believe the answer is:
behan
(Other definitions for behan that I've seen before include "Brendan . . . . . , author of ' 'Borstal Boy' '" , "Irish writer?" , "Brendan - - (Irish lit.)" , "Brendan --, Irish author" , "Brendan...wrote ''The Quare Fella'' (5)" .)