A lawyer by training, Joce became a fellow of Grays Inn, and gave readings in the autumn of 1431 and at Lent 1438. Nevertheless, he remains a shadowy figure, rarely appearing in the records save in respect to his work for clients and his association with other, more distinguished members of the legal fraternity. Following his first reading, he was returned to the Parliament of 1433 by the Wiltshire borough of Marlborough, with which he had no recorded contact. How his candidacy had been promoted is not known. Later in the same decade he was associated with two judges of the common pleas, John Cottesmore and William Paston, in transactions relating to land in Somerset,
Joce’s links with the serjeant-at-law and future judge Nicholas Aysshton* laid him open to allegations of corrupt practice. A servant of John Holand, earl of Huntingdon, claimed in a petition to the chancellor that Joce and John Colys* had been allowed to deprive him of a newly-acquired rent in Liskeard by means of a letter forged by Aysshton.
All this suggests that Joce was usually to be found in the Westminster law-courts, prepared to assist the justices in their affairs. Of his own property little is recorded, save that in February 1443 he applied for the King’s licence to grant a messuage in the parish of St. Margaret, Southwark, in mortmain to the priory church of St. Mary. A local jury reported that the property, worth 30s. p.a., was held of the priory for an annual rent of 5s. Although the Crown seemingly had no reason to refuse a licence, none appears to have been granted.
