John Plumptre belonged to an ancient Nottingham family, who had sat for the town under Richard II and Elizabeth, still lived in it at Plumptre House, but were otherwise indistinguishable from the neighbouring county families with which they inter-married. Returned as a Whig for Nottingham in 1706, he lost his seat in 1713, recovering it in 1715 with the support of the future Duke of Newcastle,
With a break from 1727 to 1734, when Newcastle arranged for him to take a temporary seat at Bishop’s Castle
for almost any other, except the three or four first employments, but he chose rather to stay where he knew he was pleased than to run the risk of meeting with what he, upon trial, might not like so well.
C. Nugent, Mem. of Robert, Earl Nugent , 254.
He spoke on 17 Mar. 1725 for a motion to prevent the universities from purchasing advowsons, and on 4 Feb. 1730, objecting to a motion for a vote of thanks for a sermon to the House on the anniversary of the execution of Charles I as
an ambiguous, dubious discourse, that might be taken by two handles, ... no ways consonant to the dignity of the day, and not very respectful to the audience he preached before, so a division and carried against it by 93 to 48. The text was ‘take the wicked from before the King and his throne shall be established in righteousness’.
Knatchbull Diary.
Plumptre lost his Nottingham seat at a three cornered contest in 1747 between the previous Tory Member, himself, and a rival Whig candidate, the 3rd Lord Howe, his relation by marriage, in which he found that ‘on a poll I should make a figure merely despicable’. He therefore withdrew, notifying his withdrawal to the Tory candidate, but not to Lord Howe’s people, ‘the ungentlemanlike and the ungrateful behaviour of that family towards me not entitling them from the very beginning of this affair to any such civility from me to them’.
