At the beginning of the civill warre he was made governor of Farnham-castle for the king, but he was but a young soldier, and did not keepe it. In 1642/3, after Edghill fight, his poeme called Cowper's Hill was printed at Oxford, in a sort of browne paper, for then they could gett no better.
1646/7 (quaere) he conveyed, or stole away, the two dukes of Yorke and Glocester from St. James's (from the tuition of the earle of Northumberland), and conveyed them into France to the Prince of Wales and Queen-mother. King Charles II sent him and the lord Culpepper envoyes to the king of Poland,....
Anno 1652, he returned into England, and being in some straights was kindly entertayned by the earle of Pembroke at Wilton, where I had the honour to contract an acquaintance with him. Here he translated the ... booke of Vergil's Æneis, and also burlesqu't it[LXIV.]: quaere Mr. Christopher Wase who was then there, tutor to William[819], lord Herbert. He was, as I remember, a yeare with my lord of Pembroke at Wilton and London; he had then sold all the lands his father had left him.
[LXIV.] He burlesqued Virgil, and burnt it, sayeing that 'twas not fitt that the best poet should be so abused.—From Mr. Christopher Wase.
His first wife was the daughter and heire of ... Cotton, of ... in Glocestershire, by whom he had 500 li. per annum, one son and two daughters.[820]His son did not patrem sapere. He was of Wadham College[821] in Dr. Wilkins's time: he dyed sine prole, I thinke, there.—One of his daughters is maried to ... Morley, of Sussex, esq.; the other....
He was much beloved by King Charles the First, who much valued him for his ingenuity. He graunted him the reversion of the surveyor of his majestie's buildings, after the decease of Mr. Inigo Jones; which place, after the restauration of King Charles II he enjoyed to his death, and gott seaven thousand pounds, as Sir Christopher Wren told me of, to his owne knowledge. Sir Christopher Wren was his deputie.
Anno Domini 166.. he maried his 2d wife, <Margaret> Brookes, a very beautifull young lady; Sir John was ancient and limping. The duke of Yorke fell deepely in love with her, though (I have been morally assured) he never had carnall knowledge of her. This occasioned Sir John's distemper of madnesse in 166.., which first appeared when he went from London to see the famous free-stone quarries at Portland in Dorset, and when he came within a mile of it, turned back to London again, and did[822] not see it. He went to Hownslowe, and demanded rents of lands he had sold many yeares before; went to the king, and told him he was the Holy Ghost. But it pleased God that he was cured of this distemper, and writt excellent verses (particularly on the death of Mr. Abraham Cowley) afterwards. His 2d lady had no child; was poysoned by the hands of Co. of Roc.[823] with chocolatte.
At the coronation of King Charles II he was made Knight of the Bath.
He dyed (vide A. Wood's Antiq. Oxon.) at the house of his office (which he built, as also the brick-buildings next the street in Scotland-yard), and was buried, anno Domini 1668/9, March the 23, in the south crosse aisle of Westminster Abbey, neer Sir Jeffrey Chaucer's monument, but hitherto (1680) without any memoriall for him.
Memorandum:—the parsonage-house at Egham (vulgarly called The Place) was built by baron Denham; a house very convenient, not great, but pretty, and pleasantly scituated, and in which his son, Sir John, (though he had better seates), did take most delight in. He sold it to John Thynne, esq. In this parish is a place called Cammomill-hill, from the cammomill that growes there naturally; as also west of it is Prune-well-hill (formerly part of Sir John's possessions), where was a fine tuft of trees, a clear spring, and a pleasant prospect to the east, over the levell of Middlesex and Surrey. Sir John tooke great delight in this place, and was wont to say (before the troubles) that he would build there a retiring-place to entertaine his muses; but the warres forced him to sell that as well as the rest. He sold it to Mr. ... Anstey. In this parish W. and by N. (above Runney Meade) is Cowper's Hill, from whence is a noble prospect, which is incomparably well described by that sweet swan, Sir John Denham; printed first at Oxon shortly after Edghill fight, 1642/3.