Dykes, who resided at Dovenby Hall, three miles north-west of Cockermouth, was a member of one of the oldest landowning families in Cumberland. The family name probably derived from Hadrian’s Wall, upon the line of which is Dykesfield, where the family of Dykes, or Del Dykes, resided before the Norman Conquest.
As a leading Cumberland Whig, Dykes had played a prominent part in Cockermouth’s Reform movement, though he had rejected calls for the ballot, civil list reductions and the abolition of property tax.
Seeking re-election in 1835, Dykes was vehemently criticised by a number of electors who were dismayed at his parliamentary record. One elector charged him with ‘a neglect of duty, with an inattention to their interests which even his friends admitted’, while another attacked him for his votes in favour of flogging in the army and navy impressment, which were described as ‘a betrayal of trust’.
In December 1835 Dykes ‘startled’ the electors of Cockermouth by announcing his intention to resign the representation of the borough, citing ill health and the pressure of devoting the necessary time to public business.
Dykes died at the family seat of Dovenby Hall in November 1866. His effects were valued at under £20,000 and he was succeeded by his eldest son, Fretcheville Brougham Ballantine Dykes.
