By Lauren R. Giannini   The 2013 Rolex Kentucky Three-Day Event showcased several new stars: Donner completed his first 4-star with double clear jumping rounds for Lynn Symansky (Virginia) – 5th place and second-best American duo; Pawlow with Will Faudree (North Carolina) placed fifth (19th last year); Meghan O’Donoghue (Illinois) and Pirate also made their