George Parker Nelson was the second son of William and Cornelia Mandeville Hardman Nelson. He was born, 25 January 1817, at Peekskill-on-Hudson. He was baptized in the Presbyterian Church at Peekskill and he attended school at Upper Red Hook, in Dutchess county, and at the Peekskill
Academy. He graduated from Williams College in 1836. After that he studied law with his father for one year, and one year in the office of Henry B. Cowles. He was chosen as School Commissioner in New York City, and later Supervisor of Scarsdale. Mary Delavan Nelson, the only daughter of Richard Nelson, were married, on the 25 September 1845, by Rev. Dr. Hutton in the Reformed Dutch Church, New York City.

Mary Delavan died on 4 September 1865, in Scarsdale, New York, three days before the death of their newborn child.

He married his second wife, Mary E. Robinson, was the daughter of James E. and Laura Robinson. She died Sept. 20, 1899 at Jamesport, Long Island, New York.

George died Sept. 27, 1905 at home (NYC).

Spouses:
Mary Delavan Nelson (Married 25 Sept. 1845)
Mary E. Robinson, b.? , d. 20 Sept 1899 at Jamesport, Long Island, New York.


Children:
-- Mary Nelson, b. July 12, 1846, New York City, New York, d. July 16, 1846, New York City, New York

-- Richard James Nelson, b. August 5, 1847, New York City, New York, d. August 21, 1847, New York City, New York

-- Cordelia Nelson, b. March 8, 1852, New York City, New York, d. 1 July 1919, Manhattan, New York City, New York

-- Georgiana Nelson, b. 10 Nov 1854, New York City, New York, d.?

-- Edmund Young Nelson, b. April 29, 1861, New York City, New York, d. 27 Sept 1905, New York City, New York, m. Charlotte McCready Fellows, b. Oct 1863, New York, NY., d. ?

-- William R. Nelson, b. Sept 1865, New York City, New York, d. 7 Sept 1865, New York City, New York