Bred and raced by Edmond Blanc, he was by the good winner and sire, Flying Fox and his dam was the unraced Amie by Clamart, who also won the Grand Prix de Paris. Ajax was a brother to Adam, a sire who was exported to the US in 1906 and then in 1908 to Austria.Pryor, Peter, The Classic Connection, Cortney Publications, Luton, 1979
At stud, Ajax was a influential stallion who sired Union (his first classic winner and the 3rd dam of Le Pacha) and Teddy. His daughters produced the undefeated Havresac II, Invershin, Massine and Le Correge.