 Voltaire is said to cross well with French Thoroughbreds, such as the female offspring of Furioso and those of Furioso's sons Le Mexico and Purioso.With his small size and a large hoof crack, Voltaire was originally rejected by the Oldenburg licensing commission.The KWPN commission was also not thrilled, and graded him 14th out of 14 horses in the performance test (despite his excellent jumping marks).