 In addition, Brant is an accomplished polo player and at one time, was the highest-rated amateur player in the U.S. Brant is the co-founder of the Greenwich Polo Club, the Saratoga Polo Association, and the Bridgehampton Polo Club.Brant has five children from his first marriage to Sandra Simms (born 1955); she later married writer Ingrid Sischy Four of his children with Simms have worked for Brant companies