What was the cause of Paul Revere's death?

I recently found out that when there is a statue honoring a person who happens to be portrayed riding a horse, if the horse's hooves are both on the ground the person died of natural causes, if the horse has one hoof up and the other on the ground then they died from a wound in battle, and if both hooves are in the air then they died in battle. Due to this new info i learned i wanted to test it to see if it's real. By the way, Paul Revere statue's horse has one hoof in the air and the other on the ground.