From the Roman family name Terentius
which is of unknown meaning. Famous bearers include Publius Terentius Afer, a Roman playwright, and Marcus Terentius Varro, a Roman scholar. It was also borne by several early saints
. The name was used in Ireland as an Anglicized form of TOIRDHEALBHACH
, but it was not in use as an English name until the late 19th century.