Muriel is identified in the Inquisition post mortem taken in 1369 after the death of Hugh de Courtenay, as sister of the said Hugh and mother of John Dynham, then aged 10 years and more.
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2 Jul 1380, Westminster
Presentation of Thomas de Eyton, parson of the church of Great Shelford,
in the diocese of Ely, to the church of Southpolien, the diocese of
Exeter, in the king's gift by reason of the minority of John
de Dynham, son and heir of Muriel, daughter and one of the heirs of
Thomas de Courteneye, tenant in chief, on an exchange of
benefices with William de Donnebrugge.
Calendar of Patent Rolls, Ric. II, vol1, p. 524
Research Notes: