Ossulston took part in the expedition to the West Indies in 1740 and was present at the siege of Cartagena. In his absence his father, Lord Tankerville, asked the Duke of Newcastle to find him a seat, but was unsuccessful. He subsequently complained that Ossulston was ‘so unmindful of me, that I give very little attention to any promotion or success he meets with’.
At the general election of 1747 Lord Tankerville contemplated putting Ossulston up for Northumberland, but with only a ‘broken fortune’
Soon after his father’s death in 1753, he applied unsuccessfully to Newcastle for the rangership of the parks.
My father having left such heavy legacies my affairs require an immediate assistance either by place or otherwise. I have already shown my principles by preventing an opposition for the county of Northumberland, which I assure you was chiefly owing to me, and should think myself very ill used after serving, to have no return. If there is no place vacant, the thing that would be convenient to me now to pay away is a thousand pounds. If I am so happy to succeed in this affair, you may be assured I shall be ready at all times to serve you. I must beg you will favour me with a positive answer to this; any other, or a delay, I shall construe as a peremptory denial, and shall then determine some affairs accordingly.
On Pelham’s refusal he replied, 18 Aug.:
I have gained great experience in a short time and most heartily thank you for the early lesson you have taught me. Be assured I shall not fall into the same snare again. The next time I ask anything I will make choice of a better advocate, and though I should not have been above receiving a favour conferred in a handsome manner, yet I am not so low or mean-spirited but to resent an injury.
Newcastle (Clumber) mss.
In 1756 Newcastle obtained for him a secret service pension of £800 per annum.
He died 27 Oct. 1767.
