James Delahooke, an outstanding horseman who played a key role in the creation of the late Prince Khalid Abdullah's Juddmonte empire, died of a heart attack Wednesday morning while grouse hunting in Yorkshire with friends, according to his brother Matthew Delahooke. He was 77. A large proportion of the greatest horses bred and raced by Juddmonte from the late 1980s onwards have descended from fillies or mares bought by Delahooke on the Prince's behalf. The Juddmonte families which have yielded the likes of Frankel (GB) (Galileo {Ire}), Enable (GB) (Nathaniel...