The Herefordshire subsidy returns of 1450-1 show that there were two Thomas Monmouths, the one resident in Hereford, assessed on an income of 40s. p.a., and the other living in Leominster, with an annual income of £4.
Monmouth first appears in the records in May 1448, when, described as ‘of Leominster, yeoman’, he joined another yeoman of the town in entering a bond in £40 to (Sir) Walter Devereux I*.
In the meantime Monmouth was elected to Parliament at hustings held on 3 Mar. 1453. One reason for his return at this time may be tentatively suggested. John Monmouth*, one of the King’s serjeants-at-arms from 1444, is known to have originated from Herefordshire, and if he was a near kinsman of Thomas it might explain why the latter was elected to an assembly with a strong Household element. A further indication of Lancastrian sympathies is his appearance on the Leominster jury, which on 4 Apr. 1457 laid indictments before royal commissioners charged with investigating the recent Yorkist rising in the county.
None the less, although a juror in 1457, Monmouth could not prevent his own indictment for an offence unconnected with the Yorkist rising. He was fined one mark for his part in an assault on William Stodart, constable of Leominster, on 24 Feb. 1453. Later references to him are sporadic. Two years later he was joint-plaintiff with Thomas Parker, a former sheriff of Herefordshire, in an action of trespass, and in 1462 he himself was sued for trespass by another Leominster MP, William Hood*. In this latter action he was described as a yeoman, a more accurate description than that of ‘husbandman’ assigned to him when indicted in 1457.
