Teresa Bagioli Sickles

Teresa Bagioli Sickles
Harper's Magazine engraving from a photo by Mathew Brady
Born	1836 New York City, New York
Died	February 5, 1867(1867-02-05) (aged 30–31) Brooklyn, New York, New York
Occupation	housewife
Spouse(s)	Daniel Edgar Sickles (1819–1914)
Children	Laura Buchanan Sickles (1853–1891)
Parent(s)	Antonio Bagioli (1795–1871) Maria Cooke (1819–1894)

Teresa Bagioli Sickles (1836 – February 5, 1867) was the wife of Democratic New York State Assemblyman, U.S. Representative, and later U.S. Army Major General Daniel E. Sickles. She gained notoriety in 1859, when her husband murdered her lover, Philip Barton Key II, son of Francis Scott Key. At his trial, Sickles claimed for the first time in United States jurisprudence a defense by temporary insanity. He was acquitted.