The deaths of his two elder brothers made him heir to his father's earldom, to which he succeeded in 1843, but he was in delicate health and died in 1845.
The third son of Henry Nevill, 2nd Earl of Abergavenny and his wife Mary Robinson, he was born on 25 December 1789 and baptised on 27 February 1790 at Isleworth, Middlesex.
[3] After the Battle of Vittoria, he obtained one of Joseph Bonaparte's coats, which he brought back to the family home of Eridge Castle as a souvenir.
[6] Nevill's health was very poor after about 1842, and as a consequence, he only once attended the House of Lords after succeeding his father in the earldom in 1843.
He died on 12 April 1845 at Eridge Castle; he had never married, and on his death the earldom passed to his younger brother, William.