Seven years passed before the arrival of the next incumbent, George Graham from Perthshire, who had a meeting house in Candleriggs. The Jacobite rising of 1745 had brought Bonnie Prince Charlie to Glasgow. Clementina Walkinshaw, daughter of John Walkinshaw, would later become his mistress, and mother of his only child. The penal laws restricting Scottish Episcopalians now became draconian. Graham left the following year. His replacement, in 1750, was David Lyon, with a meeting-house in Stockwell Street. From 1751, Episcopalians prepared to acknowledge the Hanoverian king could attend the qualified chapel, St Andrew's-by-the-Green. David Lyon, by now the only Scottish Episcopal priest ministering to a flock scattered across the West of Scotland, took part in the secret meeting held in Moffat in 1769 to discuss a Protestant bride for Bonnie Prince Charlie.