By 1903 he had started a career in law, and, upon the death of his grandfather in 1906, as the then eldest son of the Earl of Bessborough, he used the courtesy title of Viscount Duncannon.
By 1903 he had started a career in law, being called to the bar at the Inner Temple. After the death of his grandfather in 1906, as the then eldest son of the Earl of Bessborough, he used the courtesy title of Viscount Duncannon.