Sub-fonds [Plasgwyn] - Plasgwyn group,

William Jones (1649-1728) of Plas Gwyn, Anglesey, was the grandfather of Jane, who married Paul Panton of Bagillt, Flintshire. William's brother John Jones (1650-1727) was dean of Bangor and pioneer of Welsh charity-schools which he founded and endowed in the parishes with which he was connected. William's son, William Jones (1687-1755) married Elizabeth, daughter and heiress of John Price of Derwen, Denbighshire. It is their daughter, Jane (c. 1725-1764), sole heiress of Plas Gwyn and Derwen who married Paul Panton (1727-1797).

Paul Panton (1727-1797) of Bagillt, Flintshire, and Plas Gwyn, Anglesey, was a descendant of the Panton family of Coleshill, Flintshire. He was a barrister, antiquary, and industrialist, who developed lead and coal mines, mainly in the Holywell area. He married, Jane Jones, heiress of the Plas Gwyn estate in 1756. His son and heir was Paul Panton (1758-1822) junior. On his death unmarried, much of the estate passed to his brother Jones Panton, and subsequently to his nephew, Jones Panton the younger, whose eldest daughter and heiress Mary married Charles, 2nd Baron Vivian, in 1841.