Emperor from part of Chianti, Tuscany (5)
I believe the answer is:
titus
'emperor' is the definition.
(Roman emperor)
'part of chianti tuscany' is the wordplay.
'part of' indicates a hidden word.
'TITUS' can be found hidden inside 'chianti tuscany'.
'from' is the link.
(Other definitions for titus that I've seen before include "good book" , "- Andronicus (Shak.)" , "Roman emperor, son of Vespasian" , "Rom. emperor 79 to 81AD" , "& 20 Mervyn Peake character" .)