Arundell was the life-long friend of the 3rd Earl of Burlington, whose architectural tastes he shared and who made him his executor and trustee.
In many years acquaintance I have had the honour to be present at some family altercations, and generally, in my opinion, either might have said with great justice to the other, Brother, Brother we are both in the wrong.
Newcastle to Arundell, 25 Oct. 1744, Arundell to Newcastle, 30 Oct. 1744, Add. 32703, ff. 386, 395.
Horace Walpole describes him as ‘very silent, and shrewd, and had humour; but very indolent’.
Arundell served as page to Queen Anne, for which he received a life pension of £156 p.a.
As long as he continues in his present employment, it is indeed an income of five hundred pounds a year more; but if any accident should happen which may remove him from his present place, it will be a great pleasure to him in his latter days to have this comfortable subsistence, owing entirely to his Majesty’s personal favour and kindness for him.
Pelham to Newcastle, 16 Sept. 1748, Add. 32716, ff. 229-31.
In 1751 Pelham reported to Lord Hartington that Arundell had become ‘the reigning favourite at court’.
