A native of Gloucester, Selby gained admission to the freedom of Colchester in 1412-13.
In the mid 1420s Selby was involved in a boundary dispute with John Segrave, one of his neighbours in North Street. The quarrel was referred to arbitrators, who presented their award to the borough court in early 1425. They ruled that two houses belonging to Selby, one of them newly built, should be allowed to stand, and ordered Segrave to fill in all windows and doors on a building facing on to Selby’s tenement and garden, save for two windows they instructed him to glaze. The award did not go all Selby’s way, since the arbitrators also ruled that Segrave might retain a road he had built between the two men’s properties and a watercourse (part of which ran through his opponent’s close).
Selby quarrelled with other burgesses besides Segrave, usually over debts they owed him, although in 1436 he used the borough court to sue a clerk, John Gurdon, for withholding a ‘Gunne’ from him.
Selby had begun to play a role in Colchester’s public affairs by September 1418, when he was one of those who elected the borough’s officers for the coming year. During his own career as an office-holder he served in all the major positions in the local hierarchy, including that of j.p. (an office granted to Colchester by royal charter in 1447), and represented the borough in at least two Parliaments. Early in his first term as bailiff, he and his fellow, John Beche*, oversaw the burning of a lollard at the Balkerne Gate.
The most dramatic episode in Selby’s career occurred late in life. On 1 July 1450, during Cade’s revolt, one of Jack Cade’s lieutenants, John Gigges, came to Colchester, to raise rebellion there and in pursuit of the King’s constable of the local castle, John Hampton II*, an esquire of the Household. Failing to find the constable, he apprehended Hampton’s servant and deputy constable, Thomas Mayne*, whom he brought to Cade in Southwark. The unfortunate Mayne made a brief will at Southwark on 4 July, where the rebels beheaded him a day later. Of no particular interest for its contents, the will is of most significance for its list of witnesses. At the head of the list were Selby and a fellow burgess, William Lecche*, showing that Gigges had brought them to London with the deputy constable.
By then, however, Selby was no longer alive. The date of his death is unknown but he was certainly dead by the spring of 1452 when his executors, John Page and John Thomas, defended an action in Chancery, over some bonds he had allegedly entered into with a fellow burgess, Thomas Andrewe.
