Strong’s Greek
G2890 — Kouartos
The entry below is Strong’s own definition (1890, public domain), and every verse where the word occurs.
Κούαρτος
Kouartos — pronounced koo'-ar-tos
of Latin origin (fourth); Quartus, a Christian:--Quartus.
1 occurrence in the KJV.
Romans 16:23
Gaius mine host, and of the whole church, saluteth you. Erastus the chamberlain of the city saluteth you, and Quartus a brother.