Jane Maria Eliza Cazneau (née McManus, widowed Storm; April 6, 1807 – December 12, 1878) was an Irish-American journalist, lobbyist, and publicist who advocated the annexation of all of Mexico during the Mexican–American War.
Also at this time, Eliza Jumel named her as co-respondent in her divorce suit with Aaron Burr, alleging an affair in addition to his ruinous attempt at land speculation.
[3] Cazneau later turned to journalism, working for Horace Greeley's New-York Tribune, and Moses Yale Beach's New York Sun and the Democratic Review, strongly advocating manifest destiny.
[7] At the end of the Mexican–American War she turned her attention to Cuba, and the potential it represented, advocating for its annexation and denouncing its Spanish colonial overlords.
She later settled at Eagle Pass, a frontier village three hundred miles up the Rio Grande from the Gulf of Mexico, and got to know many of the local Indian chiefs.
[8] Despite her earlier sympathies for southern expansionism she disapproved of secession, and was hired by William H. Seward, Lincoln's Secretary of State, to write denunciations of the Confederacy.