Jeanette Jerome was born 9 January 1854 in Brooklyn, New York, United States to Leonard Walter Jerome (1817-1891) and Clarissa Hall (1825-1895) and died 29 June 1921 Westbourn Street, Paddington, England, United Kingdom of unspecified causes. She married Randolph Henry Spencer-Churchill (1849-1895) 15 April 1874 in British Embassy, Paris, France. She married George Frederick Myddelton Cornwallis-West (1874-1951) 28 July 1900 . She married Montagu Phippen Porch (1877-1964) 1 June 1918 .
Jennie Jerome was born in the Cobble Hill section of Brooklyn in 1854, the second of four daughters (one died in childhood) of financier, sportsman, and speculator Leonard Jerome and his wife Clarissa (always called Clara), daughter of Ambrose Hall, a landowner. She was raised in Brooklyn, Paris, and New York City. She had two surviving sisters, Clarita (1851–1935) and Leonie (born 1859). Another sister, Camille (1855–1863) died when Jennie was nine.
|Offspring of Randolph Henry Spencer-Churchill and Jeanette Jerome (1854-1921)|
|Winston Leonard Spencer-Churchill (1874-1965)||30 November 1874 Blenheim Palace, Woodstock, Oxfordshire, England, United Kingdom||24 January 1965 28 Hyde Park Gate, London, Greater London, England, United Kingdom||Clementine Ogilvy Hozier (1885-1977)|
|John Strange Spencer-Churchill (1880-1947)||4 February 1880 Phoenix Park, Dublin, County Dublin, Ireland||23 February 1947 London, England, United Kingdom||Gwendoline Theresa Mary Bertie (1885-1941)|