On his father’s death in 1610, Maynard inherited several hundred acres of land in the Home Counties, including properties at St. Albans, Hertfordshire, and the manor of Tooting Graveney where he made his home.
On 21 Jan. 1624 Maynard was elected to Parliament at Chippenham through the influence of his brother-in-law, Sir Edward Bayntun*. However, he also stood at St. Albans as a nominee of Prince Charles’s Council, and Sir William Maynard, believing that success in Hertfordshire was guaranteed, sent instructions for his brother Charles to be substituted as the candidate in Wiltshire. By this stage the Chippenham indenture had already been drawn up, but Bayntun persuaded the borough to erase Maynard’s name and insert his brother’s. Meanwhile, word of the initial Chippenham verdict had reached the Prince’s Council, and on 31 Jan. the St. Albans nomination was withdrawn, leaving Maynard without either burgess-ship.
During this Parliament Maynard was named to only one committee. This concerned a bill about the New River, which ran close to Sir William Maynard’s estates (22 March). However, on 3 Apr. he was also appointed to attend a conference with the Lords on recusancy. On 25 Mar. he dismissed reports that rioters in the Strand had threatened the Spanish ambassadors, thereby helping to prevent moves to offer the envoys redress. As a Buckingham client, he naturally also pitched into the attack on lord treasurer Middlesex (Sir Lionel Cranfield*), arguing shrewdly on 15 Apr. that the House should focus on his role in introducing fresh impositions, rather than explore the contentious subject of impositions in general.
Maynard retained his privy chamber post under Charles I. In the first Parliament of the new reign he again represented Chippenham, and unsuccessfully sought to persuade the Commons to increase its offer of supply from two to three subsidies, ‘one to welcome [Charles] to the kingdom and two for the affairs of the commonwealth’ (30 June). When discussion turned to war finance at Oxford, he called, on 9 Aug. for a properly financed sea-borne expedition against Spain, as against a land campaign or privateering. He opposed the granting of subsidies in reversion, and urged the House ‘to add spurs to the seahorses by giving’, successfully moving for a further debate the next day. On 10 Aug. he justified his proposal for a subsidy and two fifteenths by praising the leadership of Charles and Buckingham, and implying that the Commons had a patriotic duty to back them financially.
Maynard’s standing at Court was confirmed by his creation as a knight of the Bath at Charles’s coronation. Although not a Member of the 1626 Parliament, he was elected in 1628 for Calne, a borough situated a few miles from Chippenham, presumably with Bayntun backing. During the first session he again received just one committee nomination: to consider an estate bill promoted by his kinsman the 2nd earl of Devonshire (Sir William Cavendish I*) (10 June).
The Commons ignored this warning, and Maynard fell silent for the next month. However, it was probably at this juncture that he circulated to several friendly preachers a ‘discourse’ defending Buckingham against charges of Arminianism, and asserting that any blame for recent grievances lay with the Privy Council as a whole, not specifically with the duke, who had supported the summoning of Parliament. Maynard later assured Buckingham that these efforts had helped to bolster the moderates in the Commons until the king gave his first, qualified assent to the Petition of Right.
During the session Maynard may have used his influence with Buckingham to secure the appointment of his fellow Calne MP, George Lowe, as an esquire of the Body.
With Buckingham dead, Maynard took little part in the 1629 session. On 10 Feb. he received one bill committee nomination, concerned with the Somers Islands Company, and counselled comparatively lenient treatment of sheriff Acton of London, who was awaiting punishment for his part in Rolle’s Case. Three days later he used the pretext of a debate on religion to inform the House that the king had supported action against Scottish recusants.
Maynard was married by 1630. The match brought him additional lands in Somerset, Worcestershire and Yorkshire, although he purchased his second home, at Great Isleham, Cambridgeshire, from Sir Edward Peyton* in 1637.
