Although Marlborough’s father, the first earl, had enjoyed a career which had elevated him to the lord high treasurership under James I and Charles I, he had amassed little landed wealth.
Almost nothing is known of Ley’s early career. The Complete Peerage attributes him with an ensignship in ‘the Coldstream Guards’ in 1655 and appointment to the Privy Council on 22 Nov. 1662, but both seem improbable and the evidence for either is lacking. The death of his unmarried nephew, James Ley, 3rd earl of Marlborough, in the naval battle off Lowestoft brought him the title but little else except £500 under the terms of his nephew’s will.
A writ of summons to the Lords was issued on 15 Mar. 1670.
Marlborough took his seat on 17 Mar. 1670 and attended sittings on the next two days, and again on 25 and 31 Mar., but his subsequent appearances were sparse. Further visits to London brought him to the Lords on isolated occasions, once in November that same year, once more on an adjournment day in April 1672, and for ten days during February-March 1673 (which amounted that session to 23 per cent of sittings). His primary need to retain ministerial goodwill and punctuality in the payment of his annuity kept him firmly on the side of the court. He safeguarded himself in this respect by entering his proxy in favour of peers whose loyalty to the court was not in doubt: on 5 Jan. 1674 and 8 Jan. 1677 to Thomas Osborne, earl of Danby (later marquess of Carmarthen and duke of Leeds), on 12 May and 14 Oct. 1675 to John Granville, earl of Bath, and on 28 Oct. 1678 to Richard Arundell, Baron Arundell of Trerice. Unsurprisingly, he was recorded by Anthony Ashley Cooper, earl of Shaftesbury as ‘vile’.
Marlborough’s chief support in his impoverished circumstances was his nephew John Harington‡ (d.1700) whose seat at Kelston, Somerset, was a short distance from Marlborough’s modest residence. Harington appears to have played some part in the management of Marlborough’s straitened affairs, and was a convenient source of cash when his limited funds ran short. In his letters to Harington, Marlbrough usually made appeal as an object of pity by signing himself off as ‘your poor uncle and servant’. Preparing for a visit to London in September 1675, he offered to use his government connections, such as they were, to save Harington from nomination as high sheriff, but it is doubtful whether his voice could have carried any significant weight.
Having attended the Lords on a single occasion at the end of 1678, the first time since 1673, Marlborough was summoned to take the oaths and subscribe the declaration as required by the recently passed Test Act.
By early May 1680 Marlborough had fallen seriously ill and had taken to imbibing large amounts of brandy, presumably to alleviate pain. Even before he was dead his wealthier relatives, the Longs of Draycot, Wiltshire, were concerned to scotch any suggestion of a funeral befitting the rank of earl, and on 8 May Marlborough’s nephew Sir James Long‡ wrote to Harington suggesting that the burial be immediate and private. Administration of the estate, such as it was, was granted in June 1680 to his widow who herself was to die in poverty in 1713. Marlborough was buried at the parish church at Weston, the cost, it seems, borne chiefly by Harington.
