The name that is transliterated as «Tertius» in English is translated in Libras (Brazilian Sign Language) with a sign that combines «third son» (meaning of his name) and refers to him acting as Paul’s writer (see Romans 16:22). (Source: Missão Kophós )
«Tertius» in Libras (source )
More information under Tertius of Iconium .
For more information on translations of proper names with sign language see Sign Language Bible Translations Have Something to Say to Hearing Christians .