Ker’s Scottish ancestors had originally settled in county Antrim before moving to Tottenham, Middlesex, from where his uncle Richard Gervas Ker, Member for Newport, Isle of Wight, 1802-6, and his father had returned to Ireland in the 1780s. The former went to Antrim and the latter to county Down, where he purchased lands at Clough and Magheraknock in 1785 and the Monalto estates of the earl of Moira in 1800. Ker, who promoted his uncle’s abortive attempt to offer on the ‘independent interest’ for Antrim at the 1820 general election, was keen to ‘get into Parliament’, but owing to his connection with the Stewarts (he was the foreign secretary Lord Castlereagh’s* brother-in-law), complained that he had ‘been so much put down in jury lists, etc., etc., since I married into the family, that I feel it, and will endeavour to resist it whenever and where ever I can’.
about a seat in Parliament for me, which I should be most anxious to obtain without delay and through you if possible, without interference with Castlereagh. There are many reasons why I should wish to avoid that interference, but nevertheless if you have no other avenue, and he can return me forthwith, I throw myself into his hands. I think in the main we agree in public politics and in county politics. I do not anticipate any disagreement, though I have determined views on that subject and am performing this act partly in reference to them.Ibid. 3/35.
He was rumoured as a candidate for Downpatrick, where his family had considerable interest, but instead endorsed the return of his brother-in-law John Waring Maxwell, afterwards commenting that ‘they are angry with me here for not getting the election in my own favour’, but ‘I should never have forgiven myself if I had, as I think it is the only thing for him’.
Ker, a very poor attender who cast no recorded votes on the Catholic question and is not known to have spoken in debate in this period, voted in defence of the Liverpool ministry’s conduct towards Queen Caroline, 6 Feb., and for their supplies, 6 Mar. 1821.
At the 1826 general election Ker made way for Castlemaine’s nephew. It had long been determined that he could ‘never look to a seat’ from Londonderry, who for county Down brought forward his son Lord Castlereagh, to whom Ker wrote offering ‘my presence or my votes ... in aid of yourself or your friends’.
