Trevethan Family History
Trevethan Name Meaning
Cornish: habitational name from one or more places in Cornwall named Trevethan (in Budock Gwennap or Saint Eval). The placenames all derive from Middle Cornish tre ‘estate farmstead’. The second element may be an unrecorded Old Cornish personal name Buthen with mutation of b to v.
Source: Dictionary of American Family Names 2nd edition, 2022