Apphia
The name Apphia means “productive; fruitful”.
Easton's Bible Dictionary 1897
Increasing, a female Christian at Colosse (Philemon 1:2), supposed by some to have been the wife of Philemon.
Smith's Bible Dictionary 1863
(fruitful) a Christian woman addressed jointly with Philemon and Archippus in Phil. 2; apparently a member of Philemon’s household, and not improbably his wife. (A.D. 57)
International Standard Bible Encyclopedia 1915
af'-i-a, ap'-fi-a (Apphia, dative case of Apphia; in Phm 1:2, though Apphia, Amphia, and Appia, also occur): A Christian of Colosse, probably the wife of Philemon; certainly a member of his household, greeted as "the sister" the Revised Version, margin. In the Greek church, November 22 is sacred to her memory. It has been supposed, since this epistle concerns one household exclusively, that Apphia was Philemon's wife and the mother or sister of Archippus (which see). She was stoned to death with Philemon, Onesimus, and Archippus in the reign of Nero. (See Lightfoot, Col., 372.)