 The victory , which was received with " immense enthusiasm " , completed a three @-@ part prediction made by Rosebery as a student : that he would marry an heiress , become Prime Minister and win the Derby . He required the assistance of the police to extricate himself from the crush of well @-@ wishers at the course , while at Westminster , Ladas 's win was cheered in the House of Commons . By contrast , Rosebery was strongly criticised by some churchmen for involving himself in the " dishonesty and degradation " of the racing world . Rosebery , who responded to criticism by saying that he had " no vestige of shame " in owning a good horse , used the Derby win to his advantage ; he presented one of Ladas 's winning horseshoes as a gift to the United States ambassador Thomas F. Bayard . 
