Laurance Spelman Rockefeller (May 26, 1910 – July 11, 2004) was an American philanthropist, businessman, financier, and major conservationist. He was a prominent third-generation member of the Rockefeller family, being the fourth child of John Davison Rockefeller Jr. and Abigail Greene "Abby" Aldrich. His siblings were Abby, John III, Nelson, Winthrop, and David.