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:

Robert Moses and the Shaping of New York, Part 2
42:12

Robert Moses and the Shaping of New York, Part 1
41:59

SYMHC Classics: Eradication of Smallpox
43:25