Archippus and Apphia were both fellow Christians with Paul and Philemon.
(Philemon 1-2)". . .Paul, a prisoner of Jesus Christ, and Timothy our brother, unto Philemon our dearly beloved, and fellowlabourer, And to our beloved Apphia, and Archippus our fellowsoldier, and to the church in thy house..."(KJV) (Colossians 4:17)