Thomas was probably a descendant, perhaps the son, of John Esshing, who had represented Arundel in the Parliament of 1399 and was still living in 1427. Another kinsman, Richard Esshing, had been a tenant of the Fitzalan earls of Arundel at the turn of the century, paying rent for a house and land in Offham, just outside the town.
Esshing was elected mayor of Arundel for at least three terms. During the first, in November 1454, he organized the collection of contributions towards urgently-needed repairs to the causeway and bridge over the Arun, on which the town’s trade depended. As one of the leading burgesses he was party to the borough’s returns to the successive Parliaments of 1459 and 1460. On the former occasion the indenture was drawn up at Arundel with Thomas Tresham*, the sheriff of Surrey and Sussex, on one part, and the mayor and just four named burgesses on the other. On the latter, Arundel’s return was completed on 28 Aug. 1460 in the county court at Chichester, this time recorded in an indenture made between the sheriff and the mayor of Arundel and six named burgesses.
