Dunch’s father, Sir William, died in 1611, but his paternal grandfather and namesake, Edmund Dunch† senior, survived until November 1623, when Dunch himself was less than four months short of his twenty-first birthday. Edmund senior, anticipating that his heir would still be a minor when he drew up his will in January 1622, instructed his executors, Dunch’s uncle Samuel* and his cousin John Hampden*, to purchase the wardship if necessary.
Dunch was returned for Berkshire for the first time in 1624, despite still being a ward.
In 1629 Dunch was among those nominated as sheriff of Berkshire; but it was his uncle Samuel who was pricked.
Re-elected for Wallingford both in the spring and autumn of 1640, Dunch sided with Parliament in the Civil War, despite his post in the privy chamber, for which he was indicted of high treason by the royalists.
