Marshall Field III
Marshall Field III was an American investment banker, publisher, racehorse ownerbreeder, philanthropist, heir to the Marshall Field department store fortune and a leading financial supporter and founding board member of Saul Alinskys community organizing network Industrial Areas Foundation.
In 1926, one year after his estate was built, Marshall Field partnered with Robert A. Fairbairn, William Woodward, Sr., and Arthur B. Hancock to import Sir Gallahad III from France to stand at stud in the United States. One of their horses, named Assignation, born in 1930, was the greatgreat grandfather of Secretariat.
Source: Wikipedia