More may be added to the earlier biography.
Like many other landowners, Tretherf was frequently occupied by the defence of his lands in the law courts or otherwise. At the spring assizes of 1423 held at Launceston his tenure of a parcel of land in ‘Baydek’ was challenged by the powerful Thomas Carminowe*, but the suit was delayed by legal technicalities.
Tretherf had good reason to side with Sir Thomas Pomeroy† in his land dispute with his kinsman Edward Pomeroy†, for his eldest son and heir, Reynold Tretherf, had married one of the grand-daughters of Sir Thomas’s first wife by a previous marriage to Sir John St. Aubyn, and consequently stood to gain a share of the substantial Pomeroy lands after Sir Thomas’s death.
