Throughout the fifteenth century the Trethewy family, originating from East Looe on the south coast of Cornwall, commanded some degree influence in the town of Liskeard, and several of its members were able to secure election to Parliament for the borough. Of these, Robert was by far the most obscure. The extent of his landholdings is uncertain, but he owned two tenements in East Looe,
Few details of Trethewy’s personal life have come to light. In early 1457 he was in dispute with Thomas Philip Sage alias Savage, a servant of Henry Bodrugan†, over a debt of 60s.,
The date of Robert’s death is obscure, but he must have died childless by about 1480, by which date his brother and heir was engaged in litigation over his property in East Looe.
