Caroline Sheridan Norton’s left an abusive marriage in 1835. She then turned her skill as a writer into a lobby for legislation that would enable mothers in England to get custody of their young children.
Research:

Reynolds, K. D. "Norton [née Sheridan], Caroline Elizabeth Sarah [other married name Caroline Elizabeth Sarah Stirling Maxwell, Lady Stirling Maxwell] (1808–1877), author and law reform campaigner." Oxford Dictionary of National Biography.  25. Oxford University Press. Date of access 20 Mar. 2023, Oliphant, Margaret, et al. “Women Novelists of Queen Victoria's Reign - A Book of Appreciations.” Ballantyne. 1897. Accessed online: https://www.gutenberg.org/cache/epub/36641/pg36641.txt
Norton, Caroline. “A LETTER TO THE QUEEN ON LORD CHANCELLOR CRANWORTH'S MARRIAGE AND DIVORCE BILL.” Longman, Brown, Green and Longmans. London. 1855. Accessed oline: https://digital.library.upenn.edu/women/norton/alttq/alttq.html
“NORTON, CAROLINE (1808–1877).” English Heritage. https://www.english-heritage.org.uk/visit/blue-plaques/caroline-norton/
Holmes, Ann Sumner. “The Double Standard in the English Divorce Laws, 1857–1923.” Law & Social Inquiry, vol. 20, no. 2, 1995, pp. 601–620., doi:10.1111/j.1747-4469.1995.tb01071.x.
Langley, Samuel. “The Laureateship.” Daily News. May 15, 1850. https://www.newspapers.com/image/390815598/?terms=%22Caroline%20Norton%22&match=1
Abramowicz, Sarah. “English Child Custody Law, 1660-1839: The Origins of Judicial Intervention in Paternal Custody.” Columbia Law Review, vol. 99, no. 5, 1999, pp. 1344–92. JSTOR, https://doi.org/10.2307/1123459
Diane, Atkinson. “The Criminal Conversation of Mrs. Norton.” London. Preface Publishing. 2012.
Norton, Caroline Sheridan. “A Plain Letter to the Lord Chancellor on the Infant Custody Bill.” London. 1839. Accessed online through Indiana University: https://webapp1.dlib.indiana.edu/vwwp/view?docId=VAB7126&chunk.id=d1e495&toc.id=&brand=vwwp;query=#docView
Tomalin, Claire. “Several Strangers: Writing from Three Decades.” Viking. 1999.
Forster, Margaret. “Significant Sisters: The Grassroots of Active Feminism, 1839-1939.” Vintage Books. 2004.
Britannica, The Editors of Encyclopaedia. "Caroline Norton". Encyclopedia Britannica, 11 Jun. 2022, https://www.britannica.com/biography/Caroline-Norton
Norton, C.N. “ENGLISH LAWS FOR WOMEN IN The Nineteenth Century.” London. 1854. Accessed online through University of Pennsylvania: http://digital.library.upenn.edu/women/norton/elfw/elfw.html
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