The family of Wyse is recorded going back to the 11th century, when various members held properties scattered along the borders of Cornwall and Devon. Oliver inherited over 1,000 acres of land and some 40 messuages in east Cornwall (mostly in the neighbourhood of Launceston) as well as the manors of Greystone, ‘Trewandre’, ‘Pentewyn Wyse’ and ‘Nansogh’ the clear value of all of which was estimated at the time of his death at just under £40 a year. In 1414 when he and his wife applied to Bishop Stafford of Exeter for a licence to have a private oratory, they were permitted to do so in three of their manor-houses. Since the early 13th century the Wyses had been hereditary bailiffs-in-fee of the Cornish hundred of East Wivelshire.
This was not by any means Oliver’s only appearance in the lawcourts: in 1380 he had been charged in the King’s bench with involvement in an armed assault at ‘Crugon’; in 1388 he was accused at the local assizes of illegal possession of property, and a serious quarrel between him and the prior of St. Germans ended up in court; in 1389 he and his father were brought before the justices sitting at Launceston and made to enter into recognizances for the huge sum of £2,000 as surety that they would cease molesting Robert Trevanion (probably a kinsman of theirs); and in 1397 he alone was sued at Lostwithiel for a debt of £20.
Wyse died before 16 Nov. 1420. (The jurors at the inquisition post mortem held six years later were incorrect in giving his date of death as 8 May 9 Henry V—1421). During the minority of his son, Thomas (b.c.1418), the family estates were kept in the custody of his brother, John Wyse of Sydenham, and their kinsman, Richard Trevanion.
