"'This is the new Callisto then, is it?'"

Jupiter in the guise of Diana and the nymph Callisto (1759)
Public DomainJupiter in the guise of Diana and the nymph Callisto (1759) - Credit: François Boucher
 Callisto, in Greek mythology, was a nymph of Artemis, the goddess of hunting.

Like all Artemis's nymphs, Callisto had taken a vow to remain a virgin, but she was raped by the god Zeus (disguised as Artemis) and became pregnant.

As a punishment, she was turned into a bear.

Nan King may be equated with Callisto in that she is the 'handmaid' of Diana Lethaby; in Roman mythology, Diana the huntress was the Roman equivalent of Artemis, and Jupiter was the equivalent of Zeus.