Is There Any Connection Between Arthur and Horsemanship?

There's just not enough reason to think that there was any particular connection between arthur and horsemanship in his own time or for several centuries thereafter. The fact that he was a cavalry officer is irrelevant, because the chevalric elements in the arthur mythos only come in during the age of chivalry. As for the second candidate, artor mac aden, he was a gale, not a briton, and that right there really makes him not arthur. Even if we think there is an arthur shaped hole in the history, that hole has to be filled by someone who fought the anglo saxons and halted their westward advance. And arturm