William Nelson (June 29, 1784 – October 3, 1869) was an American lawyer and judge fromWestchester County, New York. He represented New York in theU.S. Congress from 1847 to 1851.

Born inHyde Park, Dutchess County, New York, on June 29, 1784, Nelson attended the common schools and was graduated from Poughkeepsie Academy. He studied law and wasadmitted to the bar in 1807, and commenced practice inPeekskill,Westchester County, New York. He married Cornelia Mandeville Hardman, and they had 12 children.

Nelson was a member of New York state assembly from Westchester County from 1819 to 1821. He was a member of the New York state senate, 2nd District, from 1824 to 1827. He was a state court judge for the correction of errors in New York from 1824 to 1827. For thirty years he served as district attorney for Putnam, Rockland, and Westchester Counties.^[1]

Elected as aWhig to the Thirtieth and Thirty-first Congresses asU.S. Representative from New York for the 7th District, Nelson served from March 4, 1847 – March 3, 1851.^[2] He resumed the practice of his profession.

Nelson died in Peekskill, Westchester County, New York, on October 3, 1869. He isinterred at Hillside Cemetery, Cortlandt town, Westchester County, New York.^[3]

• United States Congress."William Nelson (id: N000045)".Biographical Directory of the United States Congress.

• 1784 births
• 1869 deaths
• People from Peekskill, New York
• People from Hyde Park, New York
• Whig Party members of the United States House of Representatives from New York (state)
• 19th-century New York state court judges
• 19th-century members of the United States House of Representatives

• Articles with short description
• Short description matches Wikidata
• Use mdy dates from September 2020