He was the grandson of Richard White, who had made an immense fortune through his work as a lawyer.
Lord Bantry was succeeded by his son, the second Earl.
He sat on the Conservative benches in the House of Lords as an Irish representative peer from 1854 to 1868.
His younger brother, the third Earl, assumed in 1840 by Royal licence the additional surname of Hedges, which was that of his paternal grandmother.
The titles became extinct on the death of his son, the fourth Earl, in 1891.