Giovanni Baglione - Heavenly and Earthly Love, 2 versions
In 1602, Cardinal Benedetto Giustiniani commissioned Giovanni
Baglione to paint Divine and Profane Love, also called Heavenly
and Earthly Love (the painting on the right). Caravaggio had
recently finished his Amor Victorious. When Caravaggio viewed
Baglione's painting, he accused Baglione of copying his style.
Baglione responded to this accusation by painting the second
version (left) in which he portrayed Caravaggio as the Devil!
As both artists were competing for Church commissions, this
was a deadly insult. So began a vicious feud that lasted beyond
the grave, when Baglione became Caravaggio's biographer!
Sir Peter Paul Rubens - The Rape of Ganymede, 2 versions
On the left is a sketch in oils for the finished work on the right.
Ganymede is virtually the same in both versions. You need to
view the larger graphic to see how details changed as Rubens
developed his original design. The eagle (Jupiter in disguise)
licks Ganymede with a human-like tongue in the sketch, but
the final version has a phallic quiver to symbolize Ganymede's
fate. His compensation is to become immortal as cup-bearer.