Strong’s Greek
G5060 — Tertios
The entry below is Strong’s own definition (1890, public domain), and every verse where the word occurs.
Τέρτιος
Tertios — pronounced ter'-tee-os
of Latin origin; third; Tertius, a Christian:--Tertius.
1 occurrence in the KJV.
Romans 16:22
I Tertius, who wrote this epistle, salute you in the Lord.