Noble Italian family name (6)
I believe the answer is:
medici
'noble italian family name' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for medici that I've seen before include "Prominent family of Florence" , "Powerful 15th-century family of bankers and merchants in Florence" , "house in Florence" , "Name of leading family of renaissance Italy" , "Italian family who ruled Florence in the 15th century" .)