Hewett’s father, a London Clothworker of Derbyshire origin, has sometimes been confused with his more famous kinsman, lord mayor of London in 1559.
In January 1616 the Crown bestowed upon Hewett the next presentation to a Hertfordshire rectory.
In 1623 Hewett was appointed to the newly created Household post of receiver-general for purveyance compositions, at the same time as his wife’s brother-in-law, Simon Harvey, was appointed clerk comptroller.
In the summer of 1626 Hewett was excused the charge of two light horse in Berkshire on the ground that he paid in Suffolk and Middlesex and had nothing in Berkshire save his keepership.
