Who is Ranuccio Vecchia from Mirror Mirror and what is their importance?

Ranuccio Vecchia is Primavera's grandson. He is a hunter by trade, although encountering a unicorn, Ranuccio is no longer able to hunt without shame and self-reproach. When Ranuccio releases Bianca in the woods outside Montefiore, he disappears. He later apologizes to Bianca by kissing her after she is believed to have died. It is Ranuccio's kiss that revives Bianca and it is he who accompanies Bianca to Montefiore at the end of the narrative.