High Quality Content by WIKIPEDIA articles! Abraham Kingsley Macomber (March 7, 1874 - October, 1955) was an American adventurer, businessman, philanthropist, Thoroughbred-racehorse owner and breeder. He was born in Morristown, New Jersey, the second of the three sons of Henry Kirke Macomber, a medical doctor who moved his family to Pasadena, California in 1883.