Girl hails originally from Dublin? (5)
I believe the answer is:
irish
'from dublin?' is the definition.
(Dublin is in Ireland)
'girl hails originally' is the wordplay.
'girl' becomes 'iris' (girl's name).
'originally' indicates taking the first letters.
The initial letter of 'hails' is 'h'.
'iris'+'h'='IRISH'
(Other definitions for irish that I've seen before include "Celtic language" , "race" , "A people, language and whiskey" , "Hi, Sir, become a national" , "said to be lucky" .)