Keck was returned for Woodstock on the Marlborough interest, and throughout his parliamentary career remained the Duke’s dependant and protégé. Keck, and still more his wife, took a very active part on behalf of the New Interest in the Oxfordshire election of 1754.
Mr. Keck of Oxfordshire, Member for Woodstock, is the person I now take the liberty to trouble you about. My father I believe, Sir, spoke to you in his favour, before he went to Germany; he was of infinite use to him in the Oxfordshire election, where he spent more money than he could afford, had he no family. He is in every respect an honest man, and a gentleman, and will not prove unworthy of any favours you may please to confer on him.
And on 16 Dec. 1759 he wrote to Newcastle asking for a seat at the Board of Trade for Keck, or Humphry Morice’s place at the Board of Green Cloth, or the post of secretary to the Princess of Wales; to which Newcastle replied on the 20th that there was no vacancy at either Board, while he had ‘no concern’ with the third place.
His Majesty was very glad of an opportunity to oblige your Grace, and very readily agreed to give an allowance of £600 p.a. to the person mentioned in your Grace’s letter. He would not, however, go beyond £600, but agreed to the pension starting as from last Christmas.
The pension was continued to him till the fall of the Grenville Administration.
But the claim to better provision was repeated. Bute wrote to Fox, 16 Dec. 1762: ‘Keck was here this evening to press in the Duke of Marlborough’s name for the Green Cloth. I choose not to believe him, on the Duke’s account.’ Fox replied the next day: ‘The Duke of Marlborough thinks you promised him the Green Cloth for Keck. He says, by letter. I told him he must be mistaken, and that he would not, and to my knowledge, could not have it now. I wonder after that he should come to tease your Lordship.’
In the House Keck naturally voted with the Government, but was absent from the division of 18 Feb. 1764 on general warrants. Marlborough wrote to Bedford the same day:
On 29 May 1767, at midnight, Grenville wrote to Bedford, who might wish ‘to apprize the Duke of Marlborough of it’, that ‘Mr. Keck was seized with an apoplexy to-day on the course at Epsom, and ... is since dead’.
