Modern breed historians contest that there was enough breeding stock left after the early 19th century to restart the breed without further Arabian influence, and state that it is unlikely that two horses of unremarkable breeding and conformation had a significant influence on the breed.[13] Jean le Blanc, a founding stallion of the Percheron breed, was foaled in 1823. Today, all Percherons trace their ancestry to this stallion.[10] At this time the breed also became larger, with horses from other French districts being imported to Perche to change the Percheron from a coach horse averaging 1,200–1,400 pounds (540–640 kg) to a draft horse averaging 2,000 pounds (910 kg).[13] In 1893, the first Percheron stud book was created in France.[4] By 1910, French registrations had risen to almost 32,000 horses. Between 1880 and 1920, Percheron breeders in France exported horses all over the world, including South Africa, South America, Australia and North America.[12]