Herman L. B. Duryea (1862-1916) was an American Thoroughbred race horse owner and breeder.Herman Duryea built an estate in Old Westbury on Long Island, New York known as "Knole". Completed in 1903, it was designed by Carrere and Hastings. In 1910 he sold the property to Henry Phipps who bought it as a wedding gift for his daughter Helen's marriage to Bradley Martin.