 He died on 15 January 1754, aged 79 and is commemorated by a carved memorial in Otford Church by Sir Henry Cheere, 1st Baronet.Polhill married Elizabeth Trevor, daughter of Thomas Trevor of Glynde, Sussex on 3 September 1702.She died in 1708 and he married as his second wife, on 20 August 1713, Gertrude Holles, daughter of Thomas Pelham, 1st Baron Pelham and sister of the 1st Duke of Newcastle.