Career
Greville stood as a Parliamentary candidate for Pembrokeshire in the general election of 1831, but was defeated, and went to live abroad, embarking on a military career. Returning t0 Milford Haven in 1853, he took up residence in Castle Hall. He served as High Sheriff of Pembrokeshire for 1854.
He constructed a pier and other facilities to encourage sea traffic with Ireland.
He also constructed gasworks and waterworks, eventually running out of money for improvements and dying in debt.
