The Thomas Crompton who sat in 1621 can be identified from a letter written by him to his cousin Sir Walter Aston on 7 June reporting the proceedings of the first sitting.
Crompton’s grandfather, William Crompton, originally from Stafford, made his fortune in London and purchased former ecclesiastical property in his native county, including the priory of Stone, seven miles north of Stafford.
The profusion of namesakes makes it difficult to be certain about Crompton’s education, but he may have been the fellow commoner who matriculated from King’s College, Cambridge in the mid-1590s. Following the death of his father on 18 Sept. 1603, Crompton inherited 314 acres at Stone and 280 acres in Fenton, part of the parish of Stoke-on-Trent in north Staffordshire. He also inherited the advowson of Stoke-on-Trent, which he sold in 1605, and additional properties in Middlesex, London and Kent. However, Fenton was his mother’s jointure, and remained in her possession until at least 1618, while the property outside Staffordshire was vested in trustees to provide portions for Crompton’s sisters.
In 1629 Crompton was described as ‘being of great power, friends and alliance in the county of Stafford’, but his prominence was based upon his associations rather than wealth or lineage.
It was probably his connection with Aston, and thus to Essex, that led to Crompton’s election for Staffordshire. As Aston showed no sign of wanting to sit – possibly because the Deveurex faction took second place in the Staffordshire election returns under James – Compton served in his stead. He played no recorded part in either the 1614 or 1621 Parliaments, but on the latter occasion at least he certainly attended,as the account of its proceedings he sent Aston demonstrates. After reporting part of the king’s opening speech, he observed that ‘much pains have been taken by both Houses, many good laws framed, as well for regulating the courts of justice, as also for the rectifying trade’. He therefore attributed Parliament’s failure to produce any legislation other than the subsidy Acts to James’s sudden adjournment of the session. Crompton enclosed a copy of the Commons’ Declaration of 4 June, whose passage he had witnessed personally, and assured Aston ‘that it was done heartily and with much joy’.
Crompton was not returned to the Parliaments of 1624-6, probably because he gave way to Essex supporters of greater social eminence than himself. In 1623 he replaced the recently deceased Walter Bagot as a deputy lieutenant. As England entered the Thirty Year’s War the work of the lieutenancy grew. In Staffordshire most of the burden fell on Crompton and Sir Simon Weston*, as Essex was frequently abroad on military service and they were the only deputies resident in the county by November 1625.
In 1628, for the first time, Staffordshire was willing to return two Essex supporters for the county seats. Consequently, Crompton did not find himself squeezed out by higher-ranking Essex supporters. He was named to just one committee, to consider the bill to enable Dutton, 3rd Lord Gerard, a substantial Staffordshire landowner, to make a jointure (7 May). On 26 May he was granted leave to go into the country.
Crompton was reappointed a deputy lieutenant when Essex was restored as lord lieutenant in 1629, and in 1636 he became a trustee for Essex’s second wife.
According to his inquisition post mortem Crompton died on 30 Aug. 1645, but in fact he was buried at Stone on 8 July.
