John Bonville, son and heir of Sir William and Margaret d'Aumarle, married Elizabeth, only child and heiress of John Fitz-Roger, daughter of the first husband of his father's second wife. She was heiress-general to the Fitz-Rogers and brought the manor of Chewton-Mendip, near Wells, Somerset, and much other property into the family. In the south aisle of the chancel of Chewton-Mendip church, on a high-tomb are the recumbent effigies of a knight and lady,—the knight in chain and plate armour, with bascinet, mail-gorget, baudrick and spurs. On his surcoat are embroidered three lions rampant, the arms of Fitz-Roger. The lady is in long robe, wimple and cover-chief. The armour and costume are assignable to this era. John Bonville had two sons, William eldest and heir, Thomas, and one daughter Isabel.

Thomas the second son, who was Sheriff of Cornwall, married first Johanna eldest daughter of Hugh de St. John, eldest son of Thomas de Poynings, Lord St. John of Basing, by his wife Elizabeth daughter of Martyn Ferrers of Beer-Ferrers. By her he had one son John. Secondly, he married Leva, daughter and heir of John Gorges of Tamerton-Foliot, Devon, and widow of John Wibbery. She died 16 Dec, 1461. Thomas died 11 Feb., 1467.

John Bonville son of Thomas, married first Johanna Wibbery daughter of his father's second wife, by her first husband John Wibbery. By her he had two daughters, Anne married to Philip Coplestone, and Joanne married to John Elliot of Coteland. Secondly, he married Katharine, by whom he had two daughters, Florence who married first Sir Humphry Fulford, K.B., and secondly, Thomas Hext; and Elizabeth who married Thomas West, Lord Delawarr. John Bonville died 24 Aug., 1494.

Isabel, only daughter of John Bonville, son and heir of William Bonville, married Sir Richard Champernowne of Modbury, son of Sir Richard Champernowne, who died 26 Feb., 1418-19, and Katharine daughter of Sir Giles Daubeney, and who were both buried at Dodbrooke, near Kingsbridge.

John Bonville, her father, died in the lifetime of his father, 21 Oct., 1396, and Elizabeth Fitz-Roger, his widow, married secondly Sir Richard Stuckley of Trent, Somerset.

Leland thus speaks of the "maner places" of the Bonvilles, Wiscombe, and Shute:—

"on the west part, over an hille byyond Seton is Wiscombe, a fair maner place, sumtyme the Lord Bonvilles; now longging to the Marquise of Dorsete. The parkes and maner places of Wischum and Shoute abowte Axminster in Devonshire were the Lord Bonevilles, and after a knightes of that name or ever they came to the Marquis of Dorsetes hand."

In Sir William Bonville, the eldest son of John Bonville and Elizabeth Fitz-Roger, we reach the most celebrated individual of his race, and practically the last male in the direct line, as his son and grandson died in his lifetime. His father having died in 1396, when he was quite a child, and his mother being married again to Richard Stuckley, it is probable the boy was in the custody of his grandfather at Shute up to his death in 1407, and subsequently in the guardianship of his step-grandmother the Lady Alice until his coming of age, and taking possession of his large property in 1414, which year his mother died, but his step-grandmother lived twelve years afterward, dying in 1426.

The particulars as to the birth and baptism of this wealthy and unfortunate man, as they were deposed to by the witnesses appearing before the escheator at the enquiry held to make proofs as to his coming of age, are very homely and interesting.[14] This was taken at Honiton on "Tuesday, All Hallow's Eve, in the first year of the reign of King Henry the Fifth after the Conquest, before Henry Foleford, the Lord the King's Escheator in the county of Devon." Numerous witnesses were examined, and John Cokesdene and two others deposed,—

"that William the son of John, is of the age of 21 years and upwards, having been born at Shute, on the last day of August in the 16th year of the reign of the Lord Richard, late King of England, the Second after the Conquest (1393), and baptized in the parish church of the same vill on the same day about the hour of vespers. And this they well know to be true, as they the said jurors were, on the said last day of August, together elected at Honiton, on a certain 'Love Day' to make peace between two of their neighbours, and on that very day there came there a certain Lady Katharine, widow of Sir John Cobham, knight, and then wife of John Wyke of Nynhyde, an aunt of the said William the son of John, proposing to drive to Shute, thinking that she should be Godmother to the said infant, and met there a certain Edward Dygher, servant to the said Sir William Bonevile, who was reputed to be half-witted in consequence of his being loquacious and jocular, and who asked her whither she was going. Who answering quickly said: 'Fool, to Shute to see my nephew made a Christian,' to which the said Edward replied, with a grin, in his mother tongue, 'Kate, Kate, ther to by myn pate comystow to late,' meaning thereby that the baptism of the child was already over. Whereupon she mounted upon her horse in a passion, and rode home in deep anger, vowing that she would not see her sister, to wit the said child's mother, for the next six months, albeit she should be in extremis and die."