[1] In 1712, Rundle made the acquaintance of William Whiston, in Oxford for patristic study and to find support for his Society for Promoting Primitive Christianity.
Going to London, he attended Whiston's society, which held meetings from 3 July 1715 to 28 June 1717; but Thomas Emlyn found Rundle worldly.
Talbot became bishop of Durham, and collated him to a stall in the cathedral (23 January 1722), giving him also the vicarage (1722) and rectory (1724) of Sedgefield, and appointing him (1728) to the mastership of Sherburn Hospital.
Gibson's ally Richard Venn, rector of St. Antholin's, London, reported a conversation between Rundle and Robert Cannon, who was noted for light-hearted sceptical remarks.
Rundle was defended by Arthur Ashley Sykes and John Conybeare, and was known to have preached against deists, and debated against Matthew Tindal and Anthony Collins in the Grecian coffee-house.
He took a keen interest in the proceedings, praising the prosecution counsel highly, while deploring the weakness of the defence's legal team.
[2] Lord Santry was found guilty and sentenced to death, but King George II, with evident reluctance, was eventually persuaded to pardon him.
[3] Rundle died unmarried at his house on Williams Street, Dublin on 14 April 1743, leaving most of his fortune of £20,000 to John Talbot.
Most of them are addressed to Barbara (1685–1746), daughter of Sir Richard Kyrle, governor of South Carolina, and widow of William Sandys (1677–1712) of Miserden, Gloucestershire.