Who was the actor who died due to a horseback riding accident?

There have been several actors who have died in horseback riding accidents. To give you a more specific answer, I need more information.

Could you tell me:

* When did the accident happen? (e.g., year, decade)

* Do you remember the actor's name? (even partially)

* What kind of movie or show were they known for?

With more information, I can help you identify the actor you're thinking of.