"1951Z"^^ . . . "1951-01-08Z"^^ . . "1861Z"^^ . "Samuel Doyle Riddle (July 1, 1861 \u2013 January 8, 1951) was an American businessman and racehorse owner. He was born in Glen Riddle, Pennsylvania, a small town southwest of Philadelphia given the family name by his father.Samuel D. Riddle, a native of Delaware County, owned and operated a woolen mill started by his father, but is best known as a sportsman. His father Samuel Riddle was born in Ireland and arrived in America in 1825. His mother was Lydia Doyle. He had a brother, Leander W. Riddle."@en . . . . . . "1861-07-01Z"^^ . "American racehorse owner" . . "Riddle, Samuel D."@en . . "Samuel D. Riddle"@en .