Herbert was descended from Richard Herbert of Ewyas, whose son, George†, established the family’s fortunes around Swansea during the early sixteenth century.
A civil lawyer, Herbert was appointed judge of the High Court of Admiralty in 1575 alongside David Lewis† of Abergavenny; the latter may have introduced Herbert to his future wife, who hailed from the neighbouring parish of Llantilio Pertholey. His training as a civilian, and linguistic aptitude, allowed Herbert to pursue a parallel diplomatic career from 1583. On Lewis’ death in 1584 Herbert relinquished his judgeship, and was subsequently made a master of Requests. He attached himself to Robert Cecil† in the 1590s, and was spoken of in 1599 as a potential chancellor of the duchy of Lancaster, which office was then vacant, but he failed to secure the post.
Cecil’s deft handling of James’s accession allowed Herbert to maintain his position under the new monarch. Yet while he survived politically, Herbert did not prosper under James, who seems to have regarded his second secretary with some affection but little real confidence. In view of Herbert’s advancing age, James referred to him as ‘my father’, and commented playfully on his use of the Welsh language at Court. One observer recalled how, after an ambassador regaled the king with a lengthy Latin oration, James made no answer ‘but gave the honour of entertaining him to Secretary Herbert’.
Herbert was returned for Monmouthshire, where he held some land and had been a member of the county bench since the early 1590s. In 1601 he had served for his native Glamorgan, but may have chosen to make way to accommodate a new royal favourite, Sir Philip Herbert*. Although he had experience of five previous Parliaments, Secretary Herbert had not been particularly active in any of them, and he remained a relatively infrequent speaker in the 1604-10 assembly. It was not an auspicious beginning when Herbert and his fellow privy councillor, Sir John Stanhope, attended the Lords for the king’s opening speech, leaving behind in the Commons’ chamber the majority of Members, who complained that they had not been invited. Matters were made worse by the conduct of a yeoman of the guard, who kept some of the Commons from entering the Lords. Rather lamely, Herbert suggested that the House should adopt ‘a moderate course’ in respect of this apparent snub.
As a privy councillor, Herbert was expected to promote James’s favourite project, the Union with Scotland, a task for which he was well equipped by his training in the Civil Law. However, he did not campaign for the Union with any great regularity or effectiveness in Parliament. He answered some of the objections to the proposed change of name to Great Britain on 19 Apr. 1604, but irritated many by suggesting that the ‘Union in name’ would lead to ‘an Union in government’, since James was then advocating only the change of name and a commission to investigate further measures.
Herbert naturally supported James’s requests for supply. In June 1604 he joined a number of other Crown spokesmen in calling for a grant of subsidies, acknowledging there was no pressing need for supply other than to allow the king’s subjects, who might otherwise be branded ‘the children of disobedience’, to demonstrate their dutifulness towards their new monarch (19 June).
As a privy councillor, Herbert figured rather more prominently in the procedural and ceremonial duties of the Commons than he did in debate.
Herbert’s declining role in the latter sessions of the Parliament was also reflected in his committee appointments. In the opening session, Herbert was personally nominated to just three committees, but this number rose to 22 in the 1605/6 session before slipping back to four in 1606/7 and two in 1610. However, it should be added that Herbert was also entitled to attend numerous other committees on account of his status as a privy councillor.
Herbert’s waning activity during the latter stages of the Parliament may have been attributable to age or ill health. In 1609 it was reported that he was intending to retire, having succeeded to the extensive estates of his brother, (Sir) William Herbert I†, which were said to be worth £1,500-£1,600 p.a.
Herbert appears to have retired from the capital shortly after, returning to Cookham in Berkshire before journeying to Glamorgan.
In May 1617 it was (most improbably) reported that Herbert was to fight a duel with Sir Lewis Tresham; it is therefore possible that he was killed in the following July, although old age seems a likelier cause of death.
