She was born at Rosemarket, Pembrokeshire to Zachariah Williams (1668/73–1755), a scientist and physician, and his wife, Martha. Her father provided her with a wide artistic and scientific education, Italian and French.
She was born at Rosemarket, Pembrokeshire to Zachariah Williams (1668/73–1755), a scientist and physician, and his wife, Martha. Her father provided her with an extensive cultural and intellectual upbringing, encompassing art and science, as well as Italian and French.