Although the pedigree of the Chyke family may not now be properly reconstructed, there is a strong possibility that this MP was descended from a namesake who had represented Wareham in five Parliaments between 1352 and 1373. His parents held property not far from the borough, at Kimmeridge and West Holme, and in 1421 they made a settlement ensuring that William would inherit it after their deaths.
Although a man named William Chyke traded in coal and other merchandise through the port of Weymouth (a cargo of his was unlawfully taken from a balinger called Le George of Weymouth at Mounts Bay in Cornwall in 1442),
Later in the 1450s Chyke became closely associated with the prominent Dorset lawyer John Newburgh II*, who lived not far away from him at East Lulworth. Thus, in 1459 he was party to transactions regarding the manor of Turners Puddle, which belonged to the Turbervilles but came, allegedly by subterfuge, to Newburgh.
Chyke was present at the shire court on 25 May 1467 to attest the indenture of return recording the election for Dorset of William Newburgh†, John’s son and heir.
