Artist, one amongst last to catch Ava Gardner's debut (10)
I believe the answer is:
caravaggio
'artist' is the definition.
(I've seen this before)
'one amongst last to catch ava gardner's debut' is the wordplay.
'one' becomes 'i' (Roman numeral).
'amongst' is an insertion indicator (I've seen this in other clues).
'last' becomes 'cargo' (I am not sure about this - if you are sure you should believe this answer much more).
'to catch' is an insertion indicator.
'debut' suggests taking the first letters.
The first letter of 'gardners' is 'g'.
'i' put within 'cargo' is 'cargio'.
'ava'+'g'='avag'
'cargio' enclosing 'avag' is 'CARAVAGGIO'.
Can you help me to learn more?
(Other definitions for caravaggio that I've seen before include "Supper at Emmaus painter" , "Artist" , "Italian painter known for contrasts of light/shade" , "Italian Baroque painter (d.1610)" , "Italian painter, d. 1610" .)