The Killigrews traced their pedigree back to the thirteenth century, and claimed bastard descent from Henry III’s brother, Richard, earl of Cornwall. Their name derived from the manor of Killigrew at St. Erme, Cornwall, but their home from the late fourteenth century was Arwennack, near Falmouth, acquired through marriage. Arwennack’s broad estates explain the family’s rise to local dominance, which reached its peak with Killigrew’s father John, builder and first captain of the royal castle of Pendennis, overlooking Falmouth Bay.
By the 1590s the local standing of the Arwennack Killigrews had been seriously undermined by debt and persistent charges of piracy and corruption, and it was chiefly the presence of Killigrew and his brother Henry at Court which kept the family’s electoral interest alive in Cornwall. Killigrew was frequently approached with West Country concerns, and acquired an impressive reputation as a fixer. In 1594 Richard Carew† commented that he had ‘made his countrymen beholden to him beyond ability or possibility of requital’. At the next election he was returned as a Cornish knight of the shire, the first of his family to achieve this distinction despite owning little land in the county.
By the turn of the century Killigrew was already relatively old. In 1601 he was reported to be trying to resign his privy chamber place to his son (Sir) Robert*, though in the event he retained the post until Elizabeth’s death, exchanging it for a lesser presence in James I’s Household.
Killigrew maintained his customary low profile in Parliament. He is not recorded as having spoken, and his committee appointments in the first session were rare. On 26 Mar. he was added to a conference with the Lords on wardship and purveyance. He was twice included in deputations to the king led by the Speaker in connection with Goodwin’s case (28 Mar. and 12 April). On 1 June he was named to the committee appointed to discuss the bishop of Bristol’s tract on the Union, which was held to have criticized the Commons. As a Cornish burgess he would also have been entitled to sit on a bill committee concerned with the pilchard trade (20 June).
Like the first session, the second passed off quietly for Killigrew, who was named to just six committees. These dealt with the Spencer lands bill (7 Feb. 1606), church government (25 Feb. and 1 Apr.), the sale of butter and cheese (4 Apr.), relief of skinners (2 May), and the distribution of the House’s Benevolence.
Outside Parliament, Killigrew successfully re-ordered his affairs. In March 1605 he secured the reversion of the seal office farm for his son Sir Robert, after buying off a rival applicant, and when he relinquished his London surveyorship in April 1606 it was granted to his long-time associate Walter Hickman*.
In February 1610 Killigrew apparently arranged the return of the Cecil client, Sir William Maynard, in the Penryn by-election, but he himself made little mark on the fourth session. On 15 Feb. he was named to a conference with the Lords about supply. The only committee to which he was appointed by name (27 Apr.) was established to consider John Arundell* of Trerice’s land sale bill, a specifically Cornish issue, but Killigrew would also have been entitled, as a Cornish burgess, to sit on bill committees dealing with copyhold tenancies on Crown lands (31 Mar.), Exeter weirs (19 May) and timber supplies for shipping (25 June). Apart from a mention that he took the Oath of Supremacy on 5 June, in accordance with a recent Commons motion, his name appears in the record again only on 21 May, when the House ordered the suspension of a Chancery suit between Killigrew and fellow MP Sir Nicholas Saunders, the subject of which is unclear. He played no recorded role in the fifth session.
In 1611 Killigrew’s virtual monopoly over the processing of writs from King’s Bench and Common Pleas was undermined when the privilege of preparing particular types of writ was granted to rival patentees, one of whom, John Murray*, he attempted to obstruct.
Killigrew’s income in his final years was very comfortable. He contributed £100 to the 1614 Benevolence, while a subsidy assessment in May 1622 rated him at £50 in lands.
