The family of Plas Hen (today named Talhenbont) descended from (c.1000 – 1050), Lord of
Ardudwy and
Eifionydd, founder of the 5th of the
Fifteen Tribes of Wales, . Around 1416, the family settled in the area. Madog ap Ifan ap Einion of
Ystumllyn,
Criccieth, grandson of
Ynyr Fychan (
Lord of Plas Nannau) married the daughter of
Rhys ap Tudur (
Tudors of Penmynydd). Madog's grandson married an heiress of Trefan, and the property along with Plas Hen (Talhenbont) was passed from Gruffydd ap John ap Grono to their son Gruffudd ap Robert Fychan (Vaughan), who married Elizabeth of Ystumcegid and had a large family . The property then passed to Robert Vaughan, Fychan's grandson, and it was later inherited by Robert's brother Richard (
Sheriff of Caernarvonshire, 1600) of the Vaughan of Corsygedol (Cors-Y-Gedol) family.
Plas Hen Hall ownership Vaughan of Corsygedol The mansion standing today was constructed in 1607 by William Vaughan (d. 1633) of the House of Corsygedol, a dynasty started in
Merionethshire by the Irishman
Osbwrn Wyddel around the 13th century. William's father first constructed Corsygedol in 1576, and the Hall was extended by William in 1592, a little more than a decade before he oversaw the reconstruction of Plas Hen (Talhenbont). He married and had children with Ann Vaughan (of a different Vaughan family), heiress of Richard Vaughan of Plas Hen,
Mostyn baronets The last generation of Vaughan ownership began with
William Vaughan (1707–1775), who attended
Cambridge University. Vaughan was
Custos rotulorum, and
MP for Merioneth from 1734 for six parliaments until 1768. He married an heiress of the
Nannau estate, Catherine Nanney, daughter of Colonel Huw Nanney, on 16 February 1733. The couple had one daughter, Anne Vaughan (1734–1767). He was buried at
St Dwywe's Church, Llanddwywe. William had no male heirs, so the estate passed to his brother,
Evan Lloyd Vaughan MP, the last male representative of Plas Hen. His niece Margaret, an heiress, married Sir Thomas Mostyn (6th Baronet Mostyn), and occupied the estate from 1796 onwards, as well as inheriting her estate of Corsygedol,
Bodidris Hall, and
Wynn family owned
Bodysgallen Hall estate. Through her inheritance, the Halls passed to the family of the Mostyn baronets.
Ellis-Nanney baronets Plas Hen was later the home of
William Williams. In 1845, Talhenbont Hall and surrounding land was purchased by the Ellis-Nanney family from the Mostyn baronets for £50,000 (equivalent to £ million in ). The Hall became part of the Ellis-Nanney's estate of over . They renamed it
Talhenbont Hall from Plas Hen. In 1884, the estate was split to pay debts that had accumulated during the
Napoleonic Wars. The former Ellis-Nanney baronets of Gwynfryn and Cefndeuddwr estate was further broken up and sold to its
tenants in 1959. ==Plas Hen Hall==