 Complete the following phrase:  The Percheron breed originated in the Huisne river valley in France, which arises in Orne, part of the former Perche province, from which the breed gets its name. Several theories have been put forth as to the ancestry of the breed, though its exact origins are unknown. One source of foundation bloodstock may have been mares captured by from the Bretons some time after 496 AD. Another may have been Andalusian cavalry stallions brought from Spain by Moors in the 8th century. The Moorish were defeated at the 