A cordwainer, Spragat had commercial dealings well beyond Oxford, since he imported alum, one of the raw materials of his trade, through the port of Southampton.
Spragat became an alderman of Oxford shortly after serving as one of its bailiffs, and for part of 1444 he stood in as the town’s mayor, an office left vacant by the death in office of Thomas Bailey* in the autumn of the previous year. Initially, Bailey was replaced by Thomas Dagvile*. Dagville still held the mayoralty in May 1444 but he must have relinquished his responsibilities soon afterwards since Spragat is referred to as mayor in a deed of the following 24 June.
It was not until late in Henry VI’s reign that Spragat entered his only known Parliament, the dramatic assembly in which York laid claim to the English throne. Just a month after its dissolution, the duke’s eldest son seized the throne as Edward IV. Following this coup d’état, and past demonstrations of loyalty to Henry VI notwithstanding, the Oxford authorities set about safeguarding their right to perform the service of assisting the King’s butler on coronation day. Prior to Edward’s coronation on 28 June 1461, Spragat rode with the then mayor, John Clerk, and five other leading burgesses to London, to submit a bill of claim to (Sir) John Wenlock* and Thomas Young II*, who were acting on behalf of the nominal steward of England, the King’s younger brother George. The delegation proved its case and Spragat and his fellows duly rendered the service in question.
Whatever the case, Spragat was re-elected mayor of Oxford in the autumn of 1462, and on several occasions during the early years of Edward IV’s reign he acted as a surety and arbitrator in disputes which had come before the court held in the town by the chancellor of the university.
