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Lady Ranelagh

The Incomparable Life of Robert Boyle’s Sister

Michelle DiMeo

Lady Ranelagh

Michelle DiMeo

296 pages | 10 halftones | 6 x 9 | © 2020
Cloth $45.00 ISBN: 9780226731605 Published May 2021
E-book $10.00 to $44.99 About E-books ISBN: 9780226731742 Published May 2021

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 authorities sought her opinion on everything from decimalizing the currency to producing Hebrew grammars. She practiced medicine alongside distinguished male physicians, treating some of the most elite patients in London. Her medical recipes, political commentaries, and testimony concerning the philosophers’ stone gained international circulation. She was an important influence on Boyle and a formidable thinker in her own right.
Drawing from a wealth of new archival sources, Michelle DiMeo fills out Lady Ranelagh’s legacy in the context of a historically sensitive and nuanced interpretation of gender, science, and religion. The book re-creates the intellectual life of one of the most respected and influential women in seventeenth-century Europe, revealing how she managed to gain the admiration of diverse contemporaries, effect social change, and shape contemporary science.

List of Illustrations
Note on Conventions


1    Birth, Childhood, and Marriage (1615–42)

2    Early Days in the Hartlib Circle (1642–48)

3    Formative Years in Natural Philosophy and Medicine (1649–56)

4    Return to Ireland (1656–59)

5    Death of the Hartlib Circle and Birth of the Royal Society (1658–67)

6    Plague, Providence, and Medical Practice (1665–67)

7    Robert Boyle Moves In (1668–90)

Conclusion: Death and Legacy
Appendix: Boyle Family Genealogy
Review Quotes
Michael Hunter, author of The Decline of Magic: Britain in the Enlightenment
"Lady Ranelagh was one of the most remarkable women of her day, and it is wonderful at last to have a book-length study of her. DiMeo meticulously weaves together the fragmentary surviving sources to provide a clear and convincing picture of a truly great figure. She illustrates the extraordinary range of eminent peers on whom Lady Ranelagh had real influence, throwing especially important light on her role in the emotional and intellectual development of her brother, the scientist Robert Boyle. Some of the most telling passages in the book deal with Lady Ranelagh's medical expertise, where she benefited from the lack of clear demarcation between professional and lay practice at the time. DiMeo also has important things to say about the significance of gender in intellectual life, illustrating how a woman like Lady Ranelagh retained an unexpectedly significant role behind the scenes, albeit one subsequently largely effaced. In all, this lucid and revealing biography is indispensable."
Harold J. Cook, author of The Young Descartes: Nobility, Rumor, and War
"This is a thorough and carefully considered intellectual biography which will become a mainstay for those seeking to learn about 'philosophical' British women of the seventeenth century, at last letting us hear Lady Ranelagh's voice alongside contemporaries like Margaret Cavendish, Anne Conway, and Lucy Hutchinson as well as her famous brother. DiMeo offers a judicious, comprehensive view of the life and thought of her subject."
Pamela H. Smith, Seth Low Professor of History, Columbia University
"In this sensitive and inspiring biography, DiMeo resuscitates from fragmentary and forgotten evidence a leading religiopolitical reformer and strategist during Britain’s civil wars, medical practitioner in a period of transformation, and natural philosopher at the founding of the Royal Society. Lady Ranelagh’s invisibility today, like that of other female intellectuals of the time, is ironically a tribute to her success in this role in the past. Without DiMeo’s sleuthing, Ranelagh’s ideas, arguments, and experiences—hidden in her letters, within her brother’s writings, and in the many dedications acknowledging her collaboration—would be forgotten forever."
Sarah Hutton, University of York
"Katherine Jones, Lady Ranelagh, was a remarkable woman who played an important role in the intellectual and political circles of her day. However, the loss of most of her writings has meant that, until now, she has been remembered (if at all) only as the sister of her famous brother, the natural philosopher Robert Boyle. DiMeo's excellent biographical study is a feat of historical detective work and reconstruction, which restores Katherine Ranelagh to visibility as a prominent collaborator and mentor at the center of events in the scientific and political history of seventeenth-century Ireland and England."
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