Mary Jones (fl.1740)
Mary Jones was the wealthy widow of Robert Jones of Fonmon Castle near Glamorgan.
Her husband was converted by Howell Harris in 1741 and became a great friend of the Wesley brothers.
After Jones's death in June 1742, the Wesleys remained close to his widow and John especially was a frequent guest. Their heir Robert junior was one of the first pupils of Kingswood School
Source: The Works of John Wesley (1982), Volume 26, 146, edited by Frank Baker, and Burke's Landed Gentry (1853), Volume 1, p.658.