Question: Who was born later, John Milton Mackie or Marion Gray?

Knowledge 1: Marion Gray
Marion Gray (September 14, 1934, Oakland, California – September 2, 2016, Mission District, San Francisco) was an American artist, photographer, and teacher.A vital member of the Bay Area art scene since the 1970s, Gray's "work blurs the lines between documentation and art, and exposes shared approaches between artists working in dance, performance and visual arts." During her long career, Gray documented the performances and works of artists such as John Cage, Christo and Jeanne Claude, Merce Cunningham, Joan Jonas, Marina Abramovic, Meredith Monk, Paul Dresher, Guerrilla Girls, and many others.As curator Christina Linden explains: "her photographs, themselves powerful works of art, constitute an immensely valuable archive of the ephemeral artistic activity the Bay Area has historically fostered.” [SEP] Knowledge 2: John Milton Mackie
John Milton Mackie( 19 December 1813, in Wareham, Massachusetts – 27 July 1894, in Great Barrington, Massachusetts) was a United States writer who specialized in topics from German history and literature.
Knowledge 1: John Milton Mackie
John Milton Mackie( 19 December 1813, in Wareham, Massachusetts – 27 July 1894, in Great Barrington, Massachusetts) was a United States writer who specialized in topics from German history and literature. [SEP] Knowledge 2: Marion Cameron Gray
Marion Gray( 26 March 1902 – 16 September 1979) was a Scottish mathematician who discovered a graph with 54 vertices and 81 edges while working at American Telephone& Telegraph.The graph is commonly known as the Gray graph.
Knowledge 1: Marion Gray
Marion Gray (September 14, 1934, Oakland, California – September 2, 2016, Mission District, San Francisco) was an American artist, photographer, and teacher.A vital member of the Bay Area art scene since the 1970s, Gray's "work blurs the lines between documentation and art, and exposes shared approaches between artists working in dance, performance and visual arts." During her long career, Gray documented the performances and works of artists such as John Cage, Christo and Jeanne Claude, Merce Cunningham, Joan Jonas, Marina Abramovic, Meredith Monk, Paul Dresher, Guerrilla Girls, and many others.As curator Christina Linden explains: "her photographs, themselves powerful works of art, constitute an immensely valuable archive of the ephemeral artistic activity the Bay Area has historically fostered.” [SEP] Knowledge 2: John Milton (Georgia politician)
John Milton (c. 1740/1757–1817) was a Revolutionary War officer from a family of settlers in North Carolina who became a Colonial-era political figure that played a prominent role in the establishment and growth of the state of Georgia.Milton was the Secretary of State of Georgia from 1777 to 1799.Milton is the grandfather of Florida governor John Milton and was the recipient of the votes of two Georgia electors in the first presidential election.Milton was one of Georgia's five Presidential electors in 1789.John Milton was a signer to Georgia's ratification of the U.S. Constitution.Milton was born in Halifax County, North Carolina.He joined the Continental Army as an ensign in the 1st Georgia Regiment, Jan. 7, 1776; was promoted 1st lieutenant, and was taken prisoner at Fort Howe, Georgia, in February 1777, with Lieut.William Caldwell, on the surrender of that place, held as a hostage and imprisoned in the castle at St. Augustine, Florida, until November 1777.He was promoted captain, Sept. 15, 1777, and on his release returned to the army and served until the end of the war, retiring Sept. 15, 1782.He was secretary of the state of Georgia in 1777, 1781–83 and 1789, and on Dec. 6, 1778, at the approach of the British, removed the public records to Perrysburg by order of the governor.He engaged in planting after the war, and his adopted home state showed its gratitude to Milton's service with the electoral votes for John Milton in the historic first presidential election.He was a charter member of the (Georgia) Society of the Cincinnati, serving as the constituent society's first secretary.He was also one of the first mayors of Augusta, Georgia.John married Hannah E. Spencer, and of their children, Gen. Homer Virgil Milton (q.v.), was an officer in the War of 1812.His grandson, also named John Milton, served as the Governor of Florida during the Civil War.John Milton's great-great-grandson was William Hall Milton, United States Senator from Florida.

Answer: Marion Gray