Writer Murdoch hailing originally from Dublin? (5)
I believe the answer is:
irish
'from dublin?' is the definition.
(Dublin is in Ireland)
'writer murdoch hailing originally' is the wordplay.
'writer murdoch' becomes 'iris' (I've seen this in another clue).
'originally' says to take the initial letters.
The initial letter of 'hailing' is 'h'.
'iris'+'h'='IRISH'
(Other definitions for irish that I've seen before include "W European" , "Celtic language" , "A people, language and whiskey" , "From Eire" , "of Hibernia" .)