Relatively little is known of Overton’s career which appears to have been mainly confined to his home town of Southwark, where he set up in business as an ostler.
Overton acquired lands and tenements in St. George’s parish, which were conveyed to him by John Clipsham* (a knight of the shire for Surrey in both of his Parliaments) and Adam Levelord*, among others, but shortly after the dissolution of his second Parliament, in 1426, he made a formal quitclaim of them to several Londoners including the common clerk of the City, John Carpenter II*.
