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Portrait of Daniel Sickles, Former U.S. Representative for New York District 10
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Historical · U.S. House · New York · District 10

Daniel Sickles

Former U.S. Representative · New York District 10 · 1857–1895 · Democratic

Daniel Sickles represented New York's District 10 in the United States House of Representatives (1857–1895) for the Democratic party. The page below collects sourced biographical facts, term history, committee roles, and provenance for Sickles.

Bioguide ID: S000402

Key facts

Full name
Daniel Sickles
State
New York
District
District 10
Party
Democratic
House service
1857–1895
First House term
1857
Status
Left office
Current term ends
Born
1819
Bioguide ID
S000402
Committee assignments
Dataset version
1.20260606

Biographical narrative

922 words · sourced from the Wikipedia REST extract

Daniel Sickles was an American politician, Civil War veteran, and diplomat who served as a U.S. Representative for New York's 10th congressional district. A member of the Democratic Party, Sickles held office in the House of Representatives during two non-consecutive terms from 1857 to 1861 and later from 1863 to 1865. He is perhaps best known for his involvement in a high-profile scandal in 1859, when he shot and killed his wife's lover, an event that garnered significant media attention and led to a groundbreaking legal defense based on temporary insanity. Sickles' life and career were marked by controversy, military service, and a complex personal life, reflecting the tumultuous social and political landscape of 19th-century America.

Early life and career

Daniel Edgar Sickles was born on October 20, 1819, in New York City to Susan Marsh Sickles and George Garrett Sickles, who was a patent lawyer and politician. His early life was characterized by a blend of education and ambition. Sickles learned the printing trade and attended the University of the City of New York, which is now known as New York University. He pursued a legal career by studying law in the office of Benjamin Butler and was admitted to the bar in 1843. His political career began in earnest when he was elected to the New York State Assembly in 1847, representing New York County.

Sickles' personal life was equally notable. He married Teresa Bagioli on September 27, 1852, against the wishes of both families. At the time of their marriage, Sickles was 32 years old, while Teresa was approximately 15 or 16. Despite the age difference, Teresa was considered sophisticated for her age, being fluent in five languages. Following his marriage, Sickles' political career continued to evolve. In 1853, he became the corporation counsel for New York City but resigned shortly thereafter when appointed by President Franklin Pierce to serve as secretary of the U.S. legation in London. In this role, he worked under United States Minister to the United Kingdom James Buchanan.

After returning to the United States in 1855, Sickles was elected to the New York State Senate in 1856, where he served in the 3rd district and was re-elected the following year. His political ambitions culminated in his election as a Democrat to the 35th U.S. Congress in 1856, where he served from March 4, 1857, until March 3, 1861. During his early political career, Sickles was embroiled in several scandals, including being censured by the New York State Assembly for escorting a known prostitute into the Assembly's chambers. This incident, along with other personal controversies, contributed to a tumultuous public image.

House tenure

Sickles' tenure in the U.S. House of Representatives was marked by significant events, including his involvement in the aforementioned scandal involving the murder of Philip Barton Key II, the United States Attorney for the District of Columbia. On February 27, 1859, Sickles shot Key in Lafayette Square after discovering that Key was having an affair with his wife. This incident led to a sensational trial that captivated the nation. Sickles surrendered to authorities shortly after the shooting and was charged with murder. His defense team, which included prominent politicians, argued that he was temporarily insane due to his wife's infidelity, marking the first use of this legal defense in U.S. history. The trial received extensive media coverage, and Sickles was ultimately acquitted, a verdict that sparked public debate and controversy.

Following his acquittal, Sickles briefly withdrew from public life but did not resign from Congress. His actions and the subsequent reconciliation with his wife drew more public outrage than the murder itself. Sickles' return to the political arena came after the outbreak of the Civil War, during which he sought to rehabilitate his public image by raising volunteer units for the Union Army. His military service began with a commission in the 12th Regiment of the New York Militia, where he attained the rank of major.

Sickles' military career progressed rapidly as he organized and commanded the 70th New York Infantry, ultimately being promoted to brigadier general of volunteers in September 1861. His tenure as a military leader was marked by his progressive stance on issues such as the treatment of runaway slaves, whom he employed in his camp and trained as soldiers. However, his command was short-lived; in March 1862, he was forced to relinquish his position when Congress refused to confirm his commission. Despite this setback, Sickles lobbied his political contacts in Washington and managed to reclaim his command.

Legislative focus and committees

During his time in the House, Sickles was involved in various legislative matters, although specific details regarding the bills he supported or committees he served on are not extensively documented. His political career was characterized by a focus on issues relevant to his constituents and the broader national context of the time, particularly as the nation grappled with the impending Civil War. Sickles' experiences as a soldier and his earlier political controversies likely influenced his legislative priorities and interactions with fellow lawmakers.

Sickles' final term in the House ended on March 3, 1865, after which he continued to be active in public life. He served as a diplomat and held various positions, reflecting his enduring engagement with political and military affairs. Sickles' legacy is complex, encompassing his contributions to American politics, his military service, and the controversies that surrounded his personal life. He passed away on May 3, 1914, leaving behind a multifaceted legacy that continues to be studied by historians and political scholars.

Notable legislation

Sponsored and co-sponsored legislation for Daniel Sickles is pending operator curation. The biographical narrative above carries the same provenance trail until per-bill rows are written.

Sources

  1. [1]https://en.wikipedia.org/wiki/Daniel_SicklesWikipedia · retrieved 2026-06-06

Notable quotes

Sourced quotes for Daniel Sickles are pending operator curation. Narrative-scope provenance remains attached below.

Sources

  1. [1]https://en.wikipedia.org/wiki/Daniel_SicklesWikipedia · retrieved 2026-06-06

Key positions

Curated policy positions for Daniel Sickles are pending operator review. The biographical narrative above carries the same provenance trail until per-topic positions are written.

Sources

  1. [1]https://en.wikipedia.org/wiki/Daniel_SicklesWikipedia · retrieved 2026-06-06

Terms served

  1. 18571859U.S. House · Term 1 · Democratic
  2. 18591861U.S. House · Term 2 · Democratic
  3. 18931895U.S. House · Term 3 · Democratic

Sources & provenance

Every attributable claim above carries a per-section [N] marker that resolves to the corresponding URL below. Each entry records the upstream provider, the canonical URL, and the timestamp at which the source was retrieved by the ingest pipeline.

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