Corbet could trace his lineage back to the Normans. Originally of Morton Corbet, in Shropshire, the Norfolk branch of the family acquired Sprowston manor in 1545.
Corbet stood as a knight of the shire for Norfolk in 1624, and with the assistance of Sir Dru Drury* also solicited the lord warden for a seat in the Cinque Ports, though he subsequently retracted this request.
At the 1625 general election Corbet again stood for Norfolk, but he apparently attracted only 98 votes. This was such a derisory number that, as one observer remarked, ‘he [would] have been as good ... [as to] have had nobody’.
The failure of the 1626 Parliament to supply the king led to the Forced Loan. Corbet was among the highest rated men in Norfolk, but he refused to pay his contribution of £20.
Corbet did not live for much longer. Although released by the king on 2 Jan. 1628, he contracted smallpox as a direct result of his imprisonment and died three weeks later.
