Italian noblewoman worried ancestors? Not right (8)
I believe the answer is:
contessa
'italian noblewoman' is the definition.
(I've seen this before)
'worried ancestors? not right' is the wordplay.
'worried' indicates an anagram.
'not' is a deletion indicator.
'right' becomes 'r' (common abbreviation).
'ancestors' with 'r' taken out is 'ancestos'.
'ancestos' anagrammed gives 'CONTESSA'.
(Other definitions for contessa that I've seen before include "noble foreign lady" , "European noble" , "foreign noblewoman" , "Italian aristocrat" , "Italian noblewoman" .)