Jonas Platt

From Wikipedia, the free encyclopedia
Jump to navigation Jump to search
Jonas Platt
Brooklyn Museum - Jonas Platt - Samuel Finley Breese Morse - overall.jpg
Portrait of Platt, by Samuel F. B. Morse, 1828
Member of the New York State Senate
In office
July 1, 1809 – June 30, 1813
Member of the U.S. House of Representatives
from New York's 9th district
In office
March 4, 1799 – March 3, 1801
Preceded byJohn Williams
Succeeded byBenjamin Walker
Member of the New York State Assembly
In office
July 1, 1795 – June 30, 1796
Personal details
Born(1769-06-30)June 30, 1769
Poughkeepsie, Province of New York, British America
DiedFebruary 22, 1834(1834-02-22) (aged 64)
Peru, New York, United States
Political partyFederalist
Spouse(s)Helena Livingston
RelationsCharles Z. Platt (brother)
Children8, including Zephaniah
ParentsZephaniah Platt
Mary Van Wyck Platt

Jonas Platt (June 30, 1769 – February 22, 1834) was an American lawyer and politician from New York. He was a member of the United States House of Representatives.[1]

Early life[edit]

Platt was born on June 30, 1769 in Poughkeepsie, Province of New York, in what was then British America. He was the son of politician and lawyer Zephaniah Platt (1735–1807), who founded Plattsburgh, New York, and his second wife, Mary Van Wyck Platt (1742–1809). Among his siblings was New York State Treasurer Charles Z. Platt.

He attended a French Academy at Montreal, Quebec, studied law, and was admitted to the bar in 1790.[1]


He practiced law in Poughkeepsie and served as the county clerk of Herkimer County, New York, from 1791 to 1798. He was also the county clerk of Oneida County, New York, from 1798 to 1802. He was a member of the New York State Assembly in 1796.[1]

Platt was elected as a Federalist to the Sixth Congress, and served from March 4, 1799, to March 3, 1801. He was the chairman of the United States House Committee on Revisal and Unfinished Business. Afterward, he resumed the practice of law and served as a general in the Cavalry in the New York State Militia. In 1810, he was an unsuccessful candidate for governor. He was a member of the New York State Senate from 1809 to 1813. He was also a member of the Council of Appointment in 1813.[1]

From 1814 to 1821, Platt was an associate justice of the New York Supreme Court. He was a delegate to the New York Constitutional Convention in 1821.[1]

Personal life[edit]

He married Helena Livingston (1767–1859), the daughter of Dr. Henry Livingston and Susannah Storm (née Conklin) Livingston.[2] She was also the sister of Continental Congressman Gilbert Livingston, the Rev. Dr. John Henry Livingston, president of Queen's College, and author Henry Livingston Jr. (the grandfather of U.S. Senator Sidney Breese and Admiral Samuel Livingston Breese), among others.[2] Together, Jonas and Helena were the parents of eight children, including:[2]

Platt died on February 22, 1834 in Peru, Clinton County, New York. He was buried at the Riverside Cemetery in Plattsburgh.[1]


  1. ^ a b c d e f "PLATT, Jonas - Biographical Information". Biographical Directory of the United States Congress. Retrieved 5 July 2018.
  2. ^ a b c Livingston, Edwin Brockholst (1910). The Livingstons of Livingston Manor: Being the History of that Branch of the Scottish House of Callendar which Settled in the English Province of New York During the Reign of Charles the Second; and Also Including an Account of Robert Livingston of Albany, "The Nephew," a Settler in the Same Province and His Principal Descendants. Knickerbocker Press. Retrieved July 5, 2018.

External links[edit]

U.S. House of Representatives
Preceded by
John Williams
Member of the U.S. House of Representatives
from New York's 9th congressional district

Succeeded by
Benjamin Walker