The head of an old recusant family, over the course of his long life Brudenell succeeded in acquiring a clutch of honours in spite of his Catholicism. He inherited the family’s extensive estates spread across eight counties. Brudenell did much to improve his inheritance and by 1635 his income was estimated at some £5,500 a year. The extent of his wealth was reflected in his ability to give his daughter a dowry of £7,000 on her marriage to John Constable, 2nd Viscount Dunbar [S], in 1635.
In 1628 Brudenell was raised to the peerage through the influence of George Villiers†, duke of Buckingham.
Already an octogenarian by the time of the Restoration, Brudenell’s active political life was effectively over long before 1660. Thus, although a regular attender during the latter stages of the Convention and the first session of the Cavalier Parliament, his role in the House’s proceedings appears to have been limited. Noted a papist in an assessment drawn up by Philip Wharton, 4th Baron Wharton, before the Convention, Brudenell took his seat on 23 July 1660, the day on which the names of those excepted from the Act of Oblivion were debated. He then retired for the remainder of the session. On 26 July he was granted permission to go to Bath for his health, and he was given leave of absence at a call of the House on 31 July. He resumed his seat following the adjournment on 6 Nov., after which he was present on 27 sitting days (60 per cent of the whole) and was named to two committees. On 13 Dec. he entered his protest along with a number of other peers over the House’s decision to pass an act vacating fines levied by Sir Edward Powell. Brudenell remained eager to see his own possessions restored to him, and on 24 Aug. he was granted an order authorizing him to search for goods estimated to be worth some £10,000.
Resolute in his desire to see Charles I’s promise of an earldom fulfilled, Brudenell petitioned the new king to honour his father’s promise, securing the intercession of the king’s younger brother, Prince Henry, duke of Gloucester.
Cardigan failed to sit after 18 Mar. 1662, but he ensured that his proxy was entrusted to his co-religionist, Henry Arundell, Baron Arundell of Wardour. On 13 July he was noted by Wharton as being likely to support (via his proxy) the attempt by George Digby, 2nd earl of Bristol, to impeach Edward Hyde, earl of Clarendon. Cardigan died on 16 Sept. 1663 and was buried at Deene Park. In his will he bequeathed an annuity of £5 to his kinsman, Lawrence Taylard, ‘being the last of his name and fallen into poverty’. He was succeeded by his son, Robert Brudenell, as 2nd earl of Cardigan.
