Lady Ranelagh: The Incomparable Life of Robert Boyle's Sister

For centuries, historians have speculated about the life of Katherine Jones, Lady Ranelagh. Dominant depictions show her either as a maternal figure to her younger brother Robert Boyle, one of the most significant scientists of his day, or as a patroness of the European correspondence network now known as the Hartlib circle—but neither portrait captures the depth of her intellect or the range of her knowledge and influence.

Philosophers, mathematicians, politicians, and religious authori...