Reverend William O'Neill, 1st Baron O'Neill (4 March 1813 – 18 April 1883) was an Anglo-Irish hereditary peer, clergyman and musical composer. Born William Chichester, he changed his surname to O'Neill in 1855.
Reverend William O'Neill, 1st Baron O'Neill (4 March 1813 – 18 April 1883) was an Anglo-Irish hereditary peer, clergyman and musical composer. Born William Chichester, he changed his surname to O'Neill in 1855.