Treffry was a member of a branch of his family which had settled at Tremure in the parish of St. Tudy to the north of Bodmin.
Treffry’s spell in the Commons aside, he is not known to have held office either under the Crown or the duchy of Cornwall, but he did occasionally serve on local juries such as that empanelled in June 1465 for the inquisition post mortem of John Chudleigh.
