Cocks was born at Thames Bank, Marlow, Buckinghamshire. His parents were Thomas Somers-Cocks (b.1769), a banker of Thames Bank, and Agneta Pole-Carew, 5th daughter of Sir Reginald Pole-Carew and sister of William Pole-Carew. Lord Somers as head of the family was chosen as his godfather. His father's oldest sister, Mrs Vernon, became his godmother. He received his education at Christ Church, Oxford, but did not obtain a degree.
Cocks became engaged to Sarah Louisa Wynne just before he turned 27. They married on 24 May 1842. She was the daughter of Charles Griffith-Wynne and the sister of Charlotte Griffith Wynne, who married John Robert Godley.
Somers-Cocks was elected at the 1847 general election as the Member of Parliament (MP) for borough of Reigate in Surrey. He was re-elected in 1852, and held the seat until he stood down at the 1857 general election.
Death and commemoration
His wife died in the 1894 influenza epidemic. Cocks died on 30 August 1899 at Thames Bank, Great Marlow. Somers Place in the Christchurch (New Zealand) suburb of Spreydon is named after him. Mount Somers, both a township and a hill in the foothills of the Southern Alps, are named after him.
- Craig, F. W. S. (1989) . British parliamentary election results 1832–1885 (2nd ed.). Chichester: Parliamentary Research Services. p. 252. ISBN 0-900178-26-4.
- Blain, Michael (2007). "The Canterbury Association (1848–1852): A Study of Its Members' Connections" (PDF). Reverend Michael Blain. p. 21. Retrieved 26 January 2011.
- Cocks 1999, p. 159.
- Cocks 1999, p. 165.
- Cocks 1999, pp. 166, 184, 189.
- The London Gazette: . 20 August 1847. Retrieved 26 January 2011.
- The London Gazette: . 3 August 185. Retrieved 26 January 2011.
- Leigh Rayment's Historical List of MPs – Constituencies beginning with "R" (part 1)
- Cocks 1999, p. 184.
- Harper, Margaret. "Christchurch Street Names S" (PDF). Christchurch City Libraries. p. 59. Retrieved 26 January 2011.
- Cocks, J.V. Somers (1999). A History of the Cocks Family (PDF) (Revised ed.). Ashhurst, New Zealand: J. Somers Cocks. ISBN 0-473-06085-X. Retrieved 26 January 2011.
- Family tree
- Hansard 1803–2005: contributions in Parliament by Thomas Somers-Cocks
|Parliament of the United Kingdom|
|Member of Parliament for Reigate
1847 – 1857
| Succeeded by|