Through his maternal grandmother, Codrington was thus connected to the earls of Sefton, the barons Penrhyn and landed gentry families.
[5] Codrington was first elected to the House of Commons in a by-election on 7 August 1834, to replace Sir Berkeley Guise, 2nd Baronet, who had died on 23 July 1834, as one of the two members for the East Gloucestershire parliamentary constituency.
[6] When Worcester's father died in 1853, he became 8th Duke of Beaufort and was translated to the House of Lords.
A second by-election on 19 December 1854 resulted in the election of Robert Stayner Holford, a wealthy landowner and dilettante, as the second member.
[6] In 1836, Codrington married Lady Georgiana Charlotte Anne Somerset (1817–1884), second daughter of Henry Somerset, 7th Duke of Beaufort, and younger daughter by his first wife Georgiana Frederica Fitzroy (d. 1821), a niece of the Duke of Wellington.