Who is Par from The Jewel in the Crown and what is their importance?

Parvati Manners is the daughter of Daphne Manners. Her father is unknown, as she was conceived on the night of Daphne's rape, but is possibly Hari Kumar. She has lived with Lady Manners and Lady Chatterjee after the death of her own mother during childbirth. She is about nine years old at the time the visitor comes to Mayapore. She is a promising singer, and is studying voice.