Lambart’s ancestors came from Carshalton, Surrey, but his grandfather acquired an ex-chantry estate at St. Mary’s, just outside Southampton, during Elizabeth’s reign.
When Lambart returned from the Continent his mother attempted to arrange a match for him, initially with an unnamed ‘daughter of a great officer of ... Ireland’. This came to nothing, but in the spring of 1623 Fleetwood approached the Cornishman Sir Richard Robartes about a match with his daughter Jane to include a dowry which would enable Dame Hester to pay off the debts on her estate. A figure of £7,000 was provisionally agreed, but the marriage took place before any formal settlement had been drafted, and Robartes refused to honour the undertaking. Dame Hester quickly secured a Chancery decree for payment of the £2,000 portion bequeathed to Jane Robartes by her grandfather, together with a further £2,000 interest. Robartes attempted to have this sentence overturned by statute in 1626, but his private bill was rejected in the Commons at its second reading (9 June). He then attempted to reverse the decree by means of a Chancery suit, but this ploy apparently also failed.
The question of Lambart’s marriage portion was linked to a wider dispute about his debts. In December 1623, shortly after he came of age and took possession of his estates, his mother assigned her jointure lands to him, in return for which he assumed responsibility for the £12,500 of debts his mother had incurred as executrix of his father’s will.
Lambart apparently lived with his father-in-law in Cornwall for most of the 1620s and 1630s, serving as a magistrate and being recommended for command of the garrison mooted for Fowey in 1625. To his annoyance, he was also rated in the Cornish subsidy lists in 1628, although he owned no land in the county.
Having failed to secure Lambart’s arrest at the start of the 1626 session, Fleetwood and Luke referred their dispute to the arbitration of William Coryton* and Sir John Strangways*. The early dissolution wrecked any chances of an agreement, and Lambart, who fled to Ireland to escape arrest,
Lambart’s financial difficulties continued during the 1630s. He never quite managed to find the full £600 a year he was required to provide to amortize his debts under the terms of the 1628 agreement, and remained at odds with Fleetwood and Luke, who secured some minor adjustments to the settlement in 1630; in 1634-5 Lambart responded with a Chancery suit to redress the balance in his favour. While these disputes generated much resentment, the compromise apparently achieved its broad aim of discouraging Lambart’s creditors from suing Fleetwood and Luke for restitution.
Lambart lived in England throughout the 1630s, and in the spring of 1640 he approached the Southampton corporation for the nomination of a parliamentary candidate.
Like most Protestant landowners, Lambart lost control of his estates at the outbreak of the Irish rebellion in October 1641. A colonelcy in the royalist forces provided him with a regular income, but the only action he is known to have seen was a raid in the Byrnes’ country south of Dublin in March 1642.
