A.T. Robertson Commentary Romans 16:9

"Salute Urbanus our fellow-worker in Christ, and Stachys my beloved." — Romans 16:9 (ASV)

Urbanus (Ουρβανον). "A common Roman slave name found among members of the household" (Sanday and Headlam). A Latin adjective from urbs, city (city-bred).

Stachys (Σταχυν). A Greek name, rare, but among members of the imperial household. It means a head or ear of grain (Matthew 12:1).