Trail blazers do not always come from the most likely beginnings. The daughter of middle-class, Swiss parents, Angelica Kauffman came from an unremarkable background but she was a child prodigy. In her early years, her talent for painting was matched by her singing voice and she had to make a choice between the two careers. She chose art and by the time she was nine was supporting her parents. They travelled widely, spending time in Italy and 15…