Stewart, a cousin of James VI and I, was orphaned in early infancy when his father was murdered in 1592. He was taken under royal protection, and granted an annual pension of 200 marks, later increased to £200, to cover his education at Oxford.
The countess of Nottingham had been naturalized by Act of Parliament in 1604; but it was not until 1624, after abortive efforts in 1614 and 1621, that an Act to the same effect was passed in favour of Stewart himself, who thus became qualified for a seat in the Commons.
Stewart entered Parliament in 1626 for Liskeard, one of five Cornish Members whom Bagg described as nominees of the 3rd earl of Pembroke, lord warden of the Stannaries. According to Bagg, the nominations were made through William Coryton*, Pembroke’s deputy in Cornwall, ‘before the writs (that summon the Parliament) were out’.
When Parliament met Stewart took his seat for Liskeard. His reasons for seeking election may have been to vent his growing frustration with the administration of naval affairs, for he evidently took a more prominent part against the duke of Buckingham than his handful of recorded speeches would indicate. He bore witness on 1 Mar. to the delivery of gold and silver from the French ship, St. Peter of Le Havre, into the hands of Buckingham, ‘to be safely kept’.
Stewart clashed with Buckingham on 29 Mar. ‘when they came forth of the House’, the duke chiding him that ‘though you have not spared me in this Parliament time, yet I have spared you’, insinuating that culpability for pillaging French ships should fall on Stewart as much as himself. Stewart retorted that ‘I have been very silent in your affairs’ hitherto but threatened to ‘fall upon’ him the next morning.
Before the next Parliament Stewart again went to sea, under the command of the 2nd earl of Warwick, who held a privateering commission. He fought a sea-battle against Spanish ships, during which an eyewitness recalled that Stewart ‘showed himself a most valorous, warlike gentleman and soldier in the face of his enemy, not to be persuaded by any means once to descend or go below from the deck’. Nevertheless the voyage was not a success, and he was deeply unpopular with his crew, who came close to mutiny.
Stewart’s claim for wages for his naval service, including the Cadiz expedition in which he failed to serve in 1625, went unpaid until 1632, and he also attempted without success to recover £853 10s. in expenses dating back to the Spanish voyage of 1623.
