Friday Trivia Challenge of 11/2015

Named for a type of goose, this champion could fly in his best days. Unfortunately, he was nearly sterile when tried at stud and could not regain his earlier form. His owner gave him to a friend, thinking the horse would have a good home as a riding horse, but when the friend died later on and his effects were sold off, the horse wound up with another owner who started running the former champion in low-level claimers. Fortunately, the first owner heard of the animal's sad plight, repurchased him, and took him home to a permanent retirement. Name the horse at the center of this tale of the turn of Fortune's wheel.