Cavan was a chestnut horse bred in Great Britain by F. E. Tuthill. His dam, Willow Ann, a daughter
Solario went on to produce the
St Leger winner
Indiana. Cavan was sired by Mossborough (a son of
Nearco) who was best known Europe as the sire of
Ballymoss. Cavan was purchased by
Boston,
Massachusetts banker
Joseph E. O'Connell at the suggestion of Irish-born trainer
Tom Barry who believed that an Irish horse was better suited for longer distances and had an edge in such American races as the prestigious
Belmont Stakes. He was named after the town of
Cavan in Ireland. ==Racing career==