New Defender's Study Bible Notes
2 Apphia. “Apphia” was a common woman’s name. She probably was the wife of Philemon and mother of Archippus. Archippus was also a pastor; however, it is not certain whether he pastored in Laodicea or Colosse or both (Colossians 4:16-17). It is possible he simply pastored a congregation meeting in Philemon’s home.
2 church in thy house. Philemon had a church meeting in his house in Colosse, and so did Nymphas (Colossians 4:15), probably at Laodicea. Perhaps there were others.