US Grant was the greatest equestrian president. Everyone says so!
“He was a great horseman and sat his horse as if he were part of the horse, all one figure. There was never a movement of any description that was not masterful and graceful. No one ever saw him disturbed in any way, that is, jolted or taken unaware on horseback, whether he was going fast or slow. He was a born horseman. He had a natural love for animals of all kinds and he was of kindly instincts, without being demonstrative at all, except to his family. He never abused an animal, never.” Corporal M. Harrison Strong Grant, The Equestrian
And then there’s Theodore. Whatever he didn’t possess in grace he made up for with enthusiasm!