After Suckling had made himself acquainted with the constitution of his own country, and taken a survey of the most remarkable things at home, he travelled to digest and enlarge his notions, from a view of other countries, where, says the above-mentioned author, he made a collection of their virtues, without any tincture of their vices and follies, only that some were of opinion he copied the French air too much, which being disagreeable to his father, who was remarkable for his gravity, and, indeed, inconsistent with, the gloominess of the times, he was reproached for it, and it was imputed to him as the effects of his travels; but some were of opinion, that it was more natural than acquired, the easiness of his manner and address being suitable to the openness of his heart, the gaiety, wit and gallantry, which were so conspicuous in him; and he seems to have valued himself upon nothing more than the character of the Courtier and the Fine Gentleman, which he so far attained, that he is allowed to have had the peculiar happiness, of making every thing he did become him.  While Suckling was thus assiduous about acquiring the reputation of a finished courtier, and a man of fashion, it is no wonder that he neglected the higher excellencies of genius, for a poet and a beau, never yet were united in one person.

Sir John was not however, so much devoted to the luxury of the court, as to be wholly a stranger to the field.  In his travels he made a campaign under the great Gustavus Adolphus, where he was present at three battles and five sieges, besides other skirmishes between Parties; and from such a considerable scene of action, gained as much experience in six months, as otherwise he would have done in as many years.

After his return to England, the Civil War being then raging, he raised a troop of horse for the King’s service, entirely at his own charge, so richly and compleatly mounted, that it stood him in 1200 l. but his zeal for his Majesty did not meet with the success it deserved, which very much affected him; and soon after this he was seized with a fever, and died in the 28th year of his age.  In which short space he had done enough to procure him the esteem of the politest men who conversed with him; but as he had set out in the world with all the advantages of birth, person, education, and fortune, peoples expectations of him were raised to too great a heighth, which seldom fails to issue in a disappointment.  He makes no figure in the history of these times, perhaps from the immaturity of his death, which prevented him from action.  This might be one reason for his being neglected in the annals of the civil war:  another might be, his unnecessary, or rather ridiculous shew of finery, which he affected in decorating his troop of horse.  This could not fail to draw down contempt upon him, for in time of public distress, nothing can be more foolish than to wear the livery of prosperity; and surely an army would have no great reason to put much confidence in the conduct or courage of that general; who in the morning of a Battle should be found in his tent perfuming his hair, or arraying himself in embroidery.