Like many of the men of Devizes, Ismell earned his living as a cloth-maker and merchant. He clearly fulfilled the statutory requirement for residence within the borough that he represented, inhabiting a tenement in the town belonging to the church of St. John.
Unquestionably, Ismell was well connected among the burgesses of Devizes. In 1434, when a dispute between him and the executors of William Walshot was put to arbitration, he was able to name two of the leading men in the borough, John Coventre III* and Robert Chandler*, as arbiters for his part.
Few details of Ismell’s later career have been discovered, and it may be assumed that he returned quietly to pursue his trade in Wiltshire. Early in 1453 he was, however, subject to a legal demand for the sum of £5 brought by the executors of the former Wiltshire escheator Richard Milborne*.
