As a younger son of a wealthy peer, it was always likely that Ashburnham would end up in Parliament; in April 1705 his father wrote, ‘my sons are both gone in to Sussex full of projects of elections for themselves’.
Following his father’s death, and his older brother’s elevation to the House of Lords, Ashburnham took over his brother’s seat of Hastings but his time in the Commons proved to be brief. In the summer of 1710, the unexpected death of his brother from smallpox propelled him into the Lords instead.
Ashburnham took his seat on the second day of the 1710 Parliament (27 Nov.) and attended on 58 days of the session, 51 per cent of the total. He took a particular interest in military affairs and his attendances in January and early February of 1711 coincided with discussions of the war in Spain. On 11 Jan. 1711 he joined with a group of Whig peers and entered two protests relating to the conduct of the war. The first was against the resolution that the defeat at Almanza was the responsibility of Henri de Massue de Ruvigny, earl of Galway [I], Charles O’Hara, Baron Tyrawley [I] and General James Stanhope†, later Earl Stanhope. The second was against the decision to reject petitions from Galway and Tyrawley. The following day he entered another protest at the decision of the House to censure the conduct of ministers for approving an offensive war in Spain. On 3 Feb. he entered two further protests; both effectively defended the previous ministry against allegations of incompetence in the conduct of the war. He covered a short absence from Parliament between 9 and 13 Feb. by a proxy registered in favour of fellow Whig Charles Mohun, 4th Baron Mohun. Ashburnham was absent from 17 Mar. to 19 Apr. 1711, probably due to ill health, as on 20 Mar. he was reported to be ‘dead or dying of a pleurisy.’
Ashburnham soon developed a reputation as a man about town, thus on 27 Nov. 1711, Lady Strafford was speculating on the duchess of Shrewsbury being ‘very coquet’ with him, and on the likelihood of a new opera singer becoming his mistress.
Ashburnham’s presumed support for the ministry in this division list is made more interesting because he was the most likely intended recipient of Swift’s pamphlet, published on 31 May, Some Reasons to prove that no Person is obliged by his Principles, as a Whig, to oppose her Majesty or her present Ministry. In a Letter to A Whig Peer.
On 2 Jan. 1713, Swift noted that Lady Ashburnham had died at her ‘country house’, or as Thomas Bateman reported on 5 Jan. ‘suddenly on the road out of Sussex’, she being ‘with child and having a cold, Sir D[avid] Hamilton was sent for, who to prevent miscarriage, administered somewhat, or other, and she fell into convulsions’.
Ashburnham missed the first few days of the 1714 session, not arriving until 2 March. He attended on 44 days of the session, 58 per cent of the total and was named only to the committee for privileges. On 5 Apr. he joined with Arthur Annesley, 5th earl of Anglesey, Montagu Bertie, 2nd earl of Abingdon, and William Dawes, archbishop of York, in opposing the motion that the Hanoverian succession was safe under the queen’s government.
The prorogation on 9 July 1714 was followed on 24 July by his marriage to Lady Anglesey in the royal chapel; this match reinforced his Tory links, she being the sister-in-law of the current earl of Anglesey, and the daughter of Lady Elizabeth Butler, Ormond’s sister. The couple then left London for Sussex, but the death of the queen brought Ashburnham back to London, where he attended on nine of the 15 days of the August 1714 session.
