Eschewing his father’s equivocation, Lisle was a committed supporter first of Parliament and then of the Cromwellian republic. His political principles were not sufficiently extreme to allow him to preside over the trial of Charles I, however, and although nominated as one of the judges, he declined to act. Although he had been well thought of by Oliver Cromwell, Lisle did not become a target of royalist resentment and was able to obtain a pardon at the Restoration. Following the king’s return he concentrated on developing his already well-established reputation as a patron of the arts. Further evidence of his relative security under the new regime is indicated by his success in obtaining a sixty-year lease on the former monastic lands at Sheen in Surrey, which he had acquired in the 1650s (and where he had commenced construction of a new seat) along with the rights to operate the ferry on the Thames there.
If he met with little hostility from the new regime, Lisle’s family relations were more fractious. He was on poor terms with his father, who preferred his more able younger brother, Algernon, and who insisted on providing generously for Lisle’s younger siblings. His relations with Algernon were also, unsurprisingly, poor. The 2nd earl’s dislike of his heir appears to have been set early on in his life, while the hostility between Lisle and Algernon Sydney appears to have stemmed more from political disagreements in the aftermath of the Civil War.
When Lisle succeeded to the earldom in November 1677 he discovered that shortly before his death his father had altered his will (already heavily weighted against Lisle) and settled additional sums on his favoured younger children. The intricacies of the settlement meant that Leicester was left with unpalatable choices bound up with the development of Leicester Fields in metropolitan Middlesex and with the payment of rents and annuities but which in either case obliged him to surrender almost £30,000 to his brothers, Algernon and Henry, who were also named as executors. He attempted to buy them off with a promise of a mere £4,000 and when this was rejected opted to challenge his father’s will. A series of expensive and bitter law suits ensued. Leicester lost, leaving him, according to his father’s former steward Gilbert Spencer, practically apoplectic with rage. In a letter to Henry Sydney, Spencer reported ‘you need not now be afraid of that cruel tyrant, who may show his teeth but can never bite, I hear he storms and swears like mad calls me 100 rogues’.
Although little is known of his politics between the Restoration and his succession to the earldom, it is just possible, although perhaps unlikely, that it was the 3rd earl when still Viscount Lisle rather than his by then elderly father who was described by James, II as having caballed with Algernon Percy, 4th earl of Northumberland, and other supporters of the ‘Isle of Wight conditions’ to obtain concessions from Charles II following the dismissal of Edward Hyde, earl of Clarendon, in the autumn of 1667.
Leicester took his seat in the House on 2 May 1678, some six months after his succession to the earldom and around five months after receiving his writ of summons (which was issued on 29 Nov. 1677).
Leicester attended one day of the abortive session of 6-13 Mar. 1679. He then took his seat once more five days into the new Parliament on 20 Mar. after which he was present on 44 per cent of all sitting days. He was named to the committees for privileges and petitions. During March Danby assessed Leicester as an opponent but also categorized him as both absent and unreliable. Leicester’s attendances in April and May were closely correlated to debates over Danby’s impeachment. He voted consistently in its favour and also supported the creation of a joint committee of both Houses to consider the method of proceeding against Danby and the other impeached lords. He was not present on 13 May when the House resolved that the bishops had a right to be present in court in capital cases until the time of sentence but entered a dissent on 27 May when the House insisted on maintaining the bishops’ rights in the face of opposition from the Commons.
Leicester took his seat at the opening of the second Exclusion Parliament on 21 Oct. 1680 and attended just under 44 per cent of sitting days. Perhaps not surprisingly, all the surviving parliamentary lists indicate that he favoured excluding James*, duke of York from the succession and that he voted against the rejection of the exclusion bill on 15 November. On 7 Dec. he found William Howard, Viscount Stafford, guilty of treason.
Danby’s pre-sessional forecast compiled in the spring of 1681 again listed Leicester as one of his opponents, but in the event Leicester did not attend the Oxford Parliament at all.
In spite of his opposition to James, Leicester seems not to have exerted himself on behalf of the new order. He failed to attend the opening of the Convention in January 1689 and was excused later that month on grounds of sickness. His final attendance came on 4 Mar. 1689 when he took the oaths to the new regime. On 29 Apr. he registered a proxy in favour of his younger brother, Henry, newly ennobled as Viscount Sydney. He did not register a proxy for either the 1689-90 session or the first session of the 1690 Parliament but from 1690 to 1693 his proxy was registered annually and alternately at the beginning of each session in favour either of Charles Talbot, 12th earl (later duke) of Shrewsbury or of Sydney. His last proxy was registered in January 1695 in favour of Sydney, now promoted earl of Romney. It is perhaps significant that he never registered a proxy in favour of his son and heir, Robert* [1317], styled Viscount Lisle, the future 4th earl of Leicester, who was summoned to Parliament by a writ of acceleration as Baron Sydney in July 1689. Lord Sydney was reported to have suffered ‘unkind usage’ at his father’s hands, which probably refers to Leicester’s failure to pay adequate maintenance to his son and daughter-in-law – a failure that in turn reflected the non-payment of Lady Sydney’s marriage portion.
Leicester’s failure to attend Parliament for most of the final decade of his life was probably largely to do with ill health. Thomas Bruce, 2nd earl of Ailesbury, described him as ‘a most infirm man’ and noted how Leicester was frequently to be seen taking the air in his carriage in the hopes of improving his condition. There is no reason to suspect that he was inimical to the new regime, even though he seems to have enjoyed entertaining men at his London residence who were politically suspect, such as Ailesbury, John Dryden and William Wycherley. Association with men like Dryden and Wycherley probably reflected Leicester’s interest in literary patronage more than his political preferences. Non-attendance of Parliament did not prevent him from continuing to develop Leicester Fields, and in the 1690s he overturned his father’s policy (based on the original licence to develop) of concentrating on residential buildings and encouraged the erection of commercial booths in the area.
Leicester died of a combination of ‘a strangury’ and old age on 6 Mar. 1698. He was said to have provided liberally for the poor in his lifetime.
