Bred by Don José Maria Ybarra, Spain Sold 1945 to Yeguada Militar The only undefeated racehorse in Spain, known for his spectacular movement and tremendous hock popping action which he passed on to his progeny Congo’s worldwide notoriety is surpassed by very few Arabians sires in history. A.K.S. He has the distinction of being undefeated as a race horse in Spain, against all breeds. deceased 1965 http://www.spanisharabianhorsesociety.org/Archive_Congo.html