Rous needs to be distinguished from two namesakes, neither of whom appear to have been a kinsman: Sir John Rous II, who sat for Worcestershire in 1626, and Sir John Rous (d.1630) of Great Waltham, Essex, who came from a Berkshire family and was a client of the earls of Warwick.
Rous’s ancestors were living at Dennington, in east Suffolk, in the early fourteenth century. Sir William Rous was probably returned for Dunwich, where he owned property, in 1529. Sir William’s younger son, Sir Edmund, certainly represented the borough while his eldest son, Sir Anthony, this Member’s great-grandfather, sat for the county in 1545. Sir Anthony purchased Henham Hall in the parish of Wangford, five miles from Dunwich, which became the family seat.
Rous’s father died shortly after proclaiming at Dunwich the accession of James I,
In 1604 a bill was laid before the Commons to enable trustees to sell part of Rous’s lands to settle his father’s debts. The measure may have been introduced by the Cornishman Sir Anthony Rous, whose name headed the committee list on 25 May, even though Sir Anthony seems not to have been related to the Suffolk family. Reported the following day by ‘Mr. Moore’ - presumably Francis Moore, one of Sir Francis Goodwin’s most prominent supporters in the Commons
Despite the land sales, Rous inherited a prosperous estate, including the rectory of Dennington in Suffolk. This fell vacant in 1624, when he presented a brother of Sir William Boswell*, who sold the living for £650 to John Ward, brother of the better-known Ipswich preacher Samuel Ward. Rumours of simony were soon circulating, but Ward bought off one rival for £260, instituted collusive proceedings against another, and retained possession for nine years.
Rous was plainly an influential figure in Dunwich by 1612, when, at his request, the corporation agreed to give 20s. to one of his mother’s servants, who was getting married.
Re-elected in 1625, Rous’s only nomination was to the committee for the free fishing bill on 27 June.
Following the dissolution it was reported by Rous’s nephew, the clergyman and diarist John Rous, that Rous had been ‘turned out of his offices’ for having ‘spoken something of the duke’ in Parliament. However, the surviving records of the 1626 Parliament do not record that either Rous or his namesake made any speeches, and there is no evidence that either man was purged from the bench. Nevertheless, Rous does not seem to have been in favour with the 2nd earl of Suffolk (Theophilus Howard*), an ally of Buckingham’s, who succeeded as lord lieutenant of Suffolk in June 1626. There is no sign that Rous served as deputy lieutenant or militia captain under the 2nd earl, posts that he had filled under the latter’s predecessor.
Rous failed to secure re-election in 1628, and on 3 Mar. he wrote bitterly to Gawdy that ‘it is too long to relate how vilely they [the bailiffs of Dunwich] have used me’. He complained that, of the burgesses elected in Suffolk, ten out of 14 were ‘courtiers’.
By late 1633 Rous was in conflict with his former constituents over sluices that he had built 12 years previously, which were now blocking the port.
Rous supported Parliament during the Civil War, serving as an active member of the Suffolk county committee and as a Presbyterian elder; he remained on the commission of the peace till his death.
