Born at Berwick, Selby belonged to a local gentry family long associated with the defence of the Anglo-Scottish border. His grandfather, father, uncle (Sir William Selby I*) and eldest brother all held the post of gentleman porter of Berwick, while his father also served as deputy warden of the East March.
Once in the capital Selby attached himself to Essex’s circle. According to his brother William, he was pursuing a wealthy widow related to the earl. However, his disaffection with the government offers an equally plausible explanation, and like many similar young gentlemen he joined Essex’s abortive rebellion in January 1601. As a minor player in the rising, he escaped with a fine of 100 marks, but Willoughby seized his opportunity to dismiss him from his captaincy. Now in financial difficulties, Selby initially returned north, but by the following year he was back in London, mixing with renegade soldiers ‘of the worst sort’.
Selby’s movements immediately after James’s accession to the English throne are not known, but his rehabilitation was confirmed by a knighthood in May 1605. Five months later, serving in the Dutch army on the king’s recommendation, he distinguished himself during a cavalry attack on Mulheim, in the Ruhr valley. Nevertheless, the Dutch government disbanded his company in December 1606, and he may have returned to Northumberland by the following month, when he was listed as a firm Protestant in a religious survey of the county.
In early 1612 Selby received a welcome boost to his finances, a £600 bequest from his uncle, Sir William Selby. This may have influenced his decision to return to Berwick for good. By now the garrison had been virtually disbanded, and he thus acquired a new role as one of the civilian population’s most prominent members. In this capacity he was elected to represent the borough in the 1614 Parliament, but he left no trace on the session’s records. Thereafter, Selby rose rapidly through the ranks of local government, joining Berwick’s corporation in the autumn of 1614, becoming a Northumberland magistrate two years later, and in 1618 securing appointment as a Border commissioner. He again sat for Berwick in the Parliaments of 1621 and 1625, but made no greater impact on the Commons than he had previously. Compared with his colourful early life, Selby’s later years were apparently respectable but uneventful. He died in 1636, leaving a daughter as his heir. No will or administration grant for him has been found. Selby is the last member of his family known to have entered Parliament.
