After completing his education at Oxford and the Middle Temple, Knollys, the heir of one of Berkshire’s leading gentry figures, participated in the brief siege of the Rhineland town of Jülich in the summer of 1610, probably as a volunteer. In 1614 he was elected to Parliament for his native town of Reading, most likely at the request of his father. Though a novice, he participated in at least two Commons’ debates, the first of which followed the second reading of a bill to naturalize the Scotsmen Sir Francis Stewart* and William Ramsey (23 May). Sir Robert Phelips proposed inserting a clause into this bill to bar Stewart, Ramsey and all Scots naturalized in future from membership of the Commons, but Knollys objected that such a proviso ‘might imply that those that are naturalized already might be of the Parliament’. He was subsequently appointed to the bill’s committee. His second intervention occurred on the final day of the session (7 June), when he opposed a motion to consider the king’s supply in committee.
While the 1614 Parliament was in session it was reported that Knollys had fallen out with the eldest son of the imprisoned Sir Walter Ralegh†. The quarrel was evidently serious, and given young Ralegh’s addiction to duelling it would probably have ended in violence had Knollys not been prevented by the government from travelling to Flushing to meet him.
Following the summons of the 1624 Parliament, Knollys postponed his departure for the Continent in the hope of obtaining re-election, as he undoubtedly wanted to influence the forthcoming debates on foreign policy. However, despite a nomination from Wallingford he came third in Reading’s poll with just nine votes.
