John, in Genoa (8)
I believe the answer is:
giovanni
'john in genoa' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for giovanni that I've seen before include "'1 across --', opera by Mozart" , "typical Italian?" , "Italian chap" , "Don - - (Mozart K527)" , "XWD SETTER" .)