The nephew of James Kirton I who, like many other members of his family, was in the service of the Seymours, Kirton was born at Almsford in Somerset, a Seymour manor leased by his grandfather.
Kirton first became involved with the Seymours in June 1610, when he witnessed the illicit marriage of William Seymour* to James I’s cousin, Lady Arbella Stuart.
Kirton was described as a servant of Seymour’s in 1626, but he had probably entered the latter’s service by 1619, when he joined Seymour in granting a quitclaim to a London citizen.
Kirton owed his parliamentary career to Seymour. It was presumably the latter who prompted Robert Devereux, 3rd earl of Essex, to nominate Kirton at Newcastle-under-Lyme in December, since Essex was Seymour’s brother-in-law. In return, Seymour undoubtedly arranged for Sir Walter Devereux’s return at Marlborough, for which borough Seymour himself had been elected but was now ineligible, having been called to the Upper House.
In 1624 Kirton was elected for the Wiltshire borough of Ludgershall, which his uncle had previously represented. Kirton’s only appointments were to consider bills to enable Hertford to sell lands (10 Mar.), to enfranchise county Durham (25 Mar.) and to settle the estate of Sir William Somervyle, to which committee he was added on 8 May. He attended at least one meeting of the Durham enfranchisement committee.
In 1625 Kirton informed Seymour that Hertford and William Herbert, 3rd earl of Pembroke, had agreed to back the election of Sir Francis and Sir Henry Ley as knights of the shire for Wiltshire.
Elected for both Marlborough and Ilchester in 1626, Kirton chose to represent the former borough again.
In 1625 Sir Francis Seymour had been the first to attack Buckingham openly in the Commons, and it is therefore unsurprising that Kirton supported Dr. Turner’s articles against the duke of Buckingham in 1626. On 18 and 22 Mar. he cited precedents for making accusations based on common fame, including the duke of Suffolk’s impeachment in 1450.
Kirton took exception to Secretary Coke’s speech of 18 Mar. defending the loan of ships to France, and on 24 Mar. he attacked Sir Humphrey May for criticizing the committee for the causes of causes. On 4 Apr. he moved for a response to lord keeper Coventry’s speech of 29 Mar., which accused Members of the Commons of being ‘willingly faulty’, asserting that he knew of none who deserved this description except those who informed the king of their proceedings. However, this proposal was not adopted.
Charles I clearly thought that Kirton was part of a conspiracy led by the earl of Bristol to attack Buckingham. On 28 June, shortly after the dissolution, he ordered Kirton, Sir John Strangways*, Sir Lewes Dyve*, and others to be examined on suspicion of being Bristol’s ‘instruments’ in ‘stirring up the dissatisfaction of divers of the Members of both Houses for the furtherance of their own private ends’.
In 1628 Kirton was elected for Great Bedwyn in Wiltshire, another Seymour borough. He retained the prominence he had attained in 1626, even though Sir Francis Seymour, for whom he had previously understudied, was now sitting. During the 1628 session he was named to 25 committees, including one to consider a bill to confirm letters patent issued by James I to the earl of Bristol (23 May),
Kirton’s reluctance to follow Seymour in offering five subsidies indicates that he could not always be trusted to follow the lead of his patron’s brother. Indeed, he may have resented his subordinate status. During the debate on the timing of the subsidies (8 May), he announced that ‘Seymour, being knight of the shire, and understanding more than myself, has altered me to his opinion; therefore I agree with him’, to which Seymour responded, doubtless sarcastically, ‘I am glad to see for my own country Mr. Kirton agrees with me’.
Kirton was perhaps a dangerous friend to have. On 14 Apr. he told the Commons that a peer had said that a Member of the House deserved to be hanged for erasing a record. On being commanded to provide details, he stated that his informant was Sir John Strangways, and that the 2nd earl of Suffolk (Theophilus Howard, Lord Walden*) had made the remark about John Selden. Strangways at first refused to confirm the story, but subsequently admitted that Kirton was correct, adding that he had told Kirton that he did not want to be called as a witness.
As the session continued, Kirton’s language became increasingly extreme. On 3 June he argued that the king would be in personal danger unless grievances were redressed.
Kirton was evidently intent on delaying the grant of subsidies. On 11 June he complained that the subsidy bill had been brought in too suddenly and that nothing had yet been said about the collection of Tunnage and Poundage, which, he claimed, contravened the Petition of Right. On 16 June he argued that the subsidy bill should be delayed until Parliament was satisfied concerning the pardon.
In the 1629 session Kirton was appointed to seven committees and made 15 recorded contributions to debate. Perhaps the most striking aspect of his behaviour was his new-found interest in religion, in particular the rise of the anti-Calvinists. On 26 Jan. he argued that ‘it is apparent to every man that new opinions are brought in by some of our Churchmen to disturb the peace of our Church ... to bring in the Romish religion’. Kirton attributed this to the ambition of some clergymen, ‘for it is well known that at first the Church of Rome, and that which we now profess were one, and then the ambition of the clergy begot and brought in all those differences that are betwixt us’.
However, Kirton remained concerned with the issue of Tunnage and Poundage, and did not share Seymour’s reluctance to pursue the case of John Rolle*. On 22 Jan. he was appointed to the committee to examine Rolle’s complaints,
On 10 Mar., the day the Parliament was finally dissolved, Kirton was appointed a trustee of the estates of Walter Long II*.
