PART ONE: ARABIAN HORSES OF DON HERNAN AYERZA (‘El Aduar’) Arabian horse breeding in Argentina began in 1892/1893 when don Hernan Ayerza and his wife María Moreyra de Ayerza traveled to the Middle East with the purpose of buying Arabian horses and start breeding them pure upon their return to Argentina. Previous to their journey, some Arabian horses had already arrived to Argentina but they were used as breed improvers for other horse breeds; no one was breeding pure Arabians before don Hernan Ayerza. Don Hernan and his wife María traveled to the same region where Lady Anne Blunt and her husband Wilfrid Scawen Blunt had gone before to buy Arabian horses, and the same region to which Homer Davenport would later travel in 1906 to obtain Arabian horses and begin breeding them in US. Don Hernan was looking for horses of excellent Arab type, right temperament, with no white markings and above 1.53 cm in height. He encountered many difficulties regarding his selection criteria of height and coat color and he wrote in his letters back home that he had passed on some very fine horses either because they were shorter than his preferred height or were heavily marked…