The model for Amor Vincit was a boy named Cecco, Caravaggio's servant and possibly his pupil as well.
He has been tentatively identified with an artist active in Rome about 1610–1625, otherwise known only as Cecco del Caravaggio – Caravaggio's Cecco – who painted very much in Caravaggio's style.
The most striking feature of Amor was the young model's evident glee in posing for the painting, so that it became rather more a portrait of Cecco than a depiction of a Roman demi-god.
The same sense of the real-life model overwhelming the supposed subject was transferred to Mattei's John the Baptist.
The youthful John is shown half-reclining, one arm around a ram's neck, his  turned to the viewer with an impish grin.
There's almost nothing to signify that this indeed the prophet sent to make straight the road in the wilderness – no cross, no leather belt, just a scrap of camel's skin lost in the voluminous folds of the red cloak, and the ram.
The ram itself is highly un-canonical – John the Baptist's animal is supposed to be a lamb, marking his greeting of Christ as the 'Lamb of God' come to take away the sins of mankind.
The ram is as often a symbol of lust as of sacrifice, and this naked smirking boy conveys no sense of sin whatsoever.
Some biographers have tried to depict Caravaggio as an essentially orthodox Catholic of the Counter-Reformation, but Cecco the Baptist seems as irredeemably pagan as his previous incarnation as Cupid.

 The Mattei Baptist proved immensely popular - eleven known copies were made, including one recognised by scholars as being from Caravaggio's own hand.
It is today held in the Doria Pamphilj Gallery on the Roman Corso. (
The gallery also houses his Penitent Magdalene and Rest on the Flight into Egypt).
The collectors ordering the copies would have been aware of a further level of irony: the pose adopted by the model is a clear imitation of that adopted by one of Michelangelo's famous ignudi on the ceiling of the Sistine Chapel (painted 1508-1512).
The role of these gigantic male nudes in Michelango's depiction of the world before the Laws of Moses has always been unclear - some have supposed them to be angels, others that they represent the Neo-Platonic ideal of human beauty - but for Caravaggio to pose his adolescent assistant as one of the Master's dignified witnesses to the Creation was clearly a kind of in-joke for the cognoscenti.

In 1601/02 Caravaggio was apparently living and painting in the palazzo of the Mattei family, inundated with commissions from wealthy private clients following the success of the Contarelli chapel where in 1600 he had displayed The Martyrdom of Saint Matthew and The Inspiration of Saint Matthew.
It was one of the most productive periods in a productive career.
Ciriaco Mattei's notebook records two payments to Caravaggio in July and December of that year, marking the beginning and completion of the original John the Baptist.
The payment was a relatively modest 85 scudi, because John was a single figure.
The copy may have been made at the same time or very soon after.
In January of that year Caravaggio received a hundred and fifty scudi for Supper at Emmaus.
For Vincenzo Giustiniani there was The Incredulity of Saint Thomas, and in January 1603 Ciriaco paid a hundred and twenty-five scudi for The Taking of Christ.
Each of these increased the immense popularity of Caravaggio among collectors - twenty copies survive of the Supper at Emmaus, more of the Taking of Christ.

But for all this success, neither the Church itself, nor any of the religious Orders, had yet commissioned anything.
The paintings in the Contarelli Chapel had been commissioned and paid for by private patrons, although the priests of San Luigi dei Francesi (which contains the chapel) had had to approve the result.
Caravaggio's problem was that the Counter-Reformation Church was extremely conservative - there had been a move to introduce an Index of Prohibited Images, and high-ranking cardinals had published handbooks guiding artists, and more especially the priests who might commission artists or approve
The model for Amor Vincit was a boy named Cecco, Caravaggio's servant and possibly his pupil as well. He has been tentatively identified with an artist active in Rome about 1610–1625, otherwise known only as Cecco del Caravaggio – Caravaggio's Cecco – who painted very much in Caravaggio's style. The most striking feature of Amor was the young model's evident glee in posing for the painting, so that it became rather more a portrait of Cecco than a depiction of a Roman demi-god. The same sense of the real-life model overwhelming the supposed subject was transferred to Mattei's John the Baptist. The youthful John is shown half-reclining, one arm around a ram's neck, his  turned to the viewer with an impish grin. There's almost nothing to signify that this indeed the prophet sent to make straight the road in the wilderness – no cross, no leather belt, just a scrap of camel's skin lost in the voluminous folds of the red cloak, and the ram. The ram itself is highly un-canonical – John the Baptist's animal is supposed to be a lamb, marking his greeting of Christ as the 'Lamb of God' come to take away the sins of mankind. The ram is as often a symbol of lust as of sacrifice, and this naked smirking boy conveys no sense of sin whatsoever. Some biographers have tried to depict Caravaggio as an essentially orthodox Catholic of the Counter-Reformation, but Cecco the Baptist seems as irredeemably pagan as his previous incarnation as Cupid.
 The Mattei Baptist proved immensely popular - eleven known copies were made, including one recognised by scholars as being from Caravaggio's own hand. It is today held in the Doria Pamphilj Gallery on the Roman Corso. (The gallery also houses his Penitent Magdalene and Rest on the Flight into Egypt). The collectors ordering the copies would have been aware of a further level of irony: the pose adopted by the model is a clear imitation of that adopted by one of Michelangelo's famous ignudi on the ceiling of the Sistine Chapel (painted 1508-1512). The role of these gigantic male nudes in Michelango's depiction of the world before the Laws of Moses has always been unclear - some have supposed them to be angels, others that they represent the Neo-Platonic ideal of human beauty - but for Caravaggio to pose his adolescent assistant as one of the Master's dignified witnesses to the Creation was clearly a kind of in-joke for the cognoscenti.
In 1601/02 Caravaggio was apparently living and painting in the palazzo of the Mattei family, inundated with commissions from wealthy private clients following the success of the Contarelli chapel where in 1600 he had displayed The Martyrdom of Saint Matthew and The Inspiration of Saint Matthew. It was one of the most productive periods in a productive career. Ciriaco Mattei's notebook records two payments to Caravaggio in July and December of that year, marking the beginning and completion of the original John the Baptist. The payment was a relatively modest 85 scudi, because John was a single figure. The copy may have been made at the same time or very soon after. In January of that year Caravaggio received a hundred and fifty scudi for Supper at Emmaus. For Vincenzo Giustiniani there was The Incredulity of Saint Thomas, and in January 1603 Ciriaco paid a hundred and twenty-five scudi for The Taking of Christ. Each of these increased the immense popularity of Caravaggio among collectors - twenty copies survive of the Supper at Emmaus, more of the Taking of Christ.
But for all this success, neither the Church itself, nor any of the religious Orders, had yet commissioned anything. The paintings in the Contarelli Chapel had been commissioned and paid for by private patrons, although the priests of San Luigi dei Francesi (which contains the chapel) had had to approve the result. Caravaggio's problem was that the Counter-Reformation Church was extremely conservative - there had been a move to introduce an Index of Prohibited Images, and high-ranking cardinals had published handbooks guiding artists, and more especially the priests who might commission artists or approve 
John the Baptist (Caravaggio)