Irish Derby
For most of his stud career, Chamossaire was a useful, but inconsistent stallion, based at the Snailwell Stud near Newmarket. His best winners included Le Sage (Sussex Stakes), Chamier (Irish Derby), Cambremer (St Leger, Prix du Cadran) and Your Highness (Irish Derby). In 1961 he sired Santa Claus whose wins included the Irish 2,000 Guineas, Epsom Derby and Irish Derby. The successes of Santa Claus earned Chamossaire the posthumous title of Leading sire in Great Britain and Ireland in 1964.