A History of the County of Somerset: Volume 4 (p. 121-128) says "In 1390 John Denebaud, son of Thomas (d. 1362), died holding this estate, evidently in right of his grandmother Joan Stocklinch, wife of William Denebaud." The Visitations of the County of Somerset in the Years 1531 and 1575 (p. 20) says William married 1st Agnes and 2nd Joan Stocklyns. Agnes was the mother of his Thomas.

https://www.medievalgenealogy.org.uk/fines/abstracts/CP_25_1_285_30.shtml
CP 25/1/285/30, number 145.
Link: Image of document at AALT
County: Somerset. Dorset. Devon.
Place: Westminster.
Date: One month from Easter, 10 Edward II [1 May 1317].
Parties: William Denebaud and Joan, his wife, querents, by William de Peret, put in the place of Joan by the lord king's writ, and Thomas de Stokelinch', the vicar of the church of Sowy, deforciant.
Property: 1 messuage, 1 mill, 2 carucates of land and 10 pounds of rent in Henton' of St George, Henton' Craft', Cruk' and Synderasshe in the county of Somerset and 1 messuage, 1 carucate of land and 66 shillings and 8 pence of rent in Wodiete and Pentrich' in the county of Dorset and 2 messuages and 2 carucates of land in Cobeton' and Holebrok' in the county of Devon.
Action: Plea [of covenant].
Agreement: William has acknowledged the tenements to be the right of Thomas, as those which Thomas has of his gift.
For this: Thomas has granted to William and Joan the tenements and has rendered them to them in the court, to hold to William and Joan and the heirs begotten by William on the body of Joan, of the chief lords for ever. In default of such heirs, remainder to the right heirs of William.