Colossians 4:15

Νυμφαν may be masculine (Νυμφᾶν) or feminine (Νύμφαν). The Doric form, Νύμφαν, is improbable; on the other hand the contracted form, Νυμφᾶν, is rare. If αὐτῶν is read, either is possible. Otherwise the decision is made by the choice between αὐτοῦ and αὐτῆς. It seems probable that αὐτῶν was due to change by a scribe who included ἀδελφ. in the reference. And a scribe might alter the feminine, assuming that a woman could not have been mentioned in this way. The attestation of αὐτῆς is very strong, though numerically slight. The Church in her house was a Laodicean Church, distinct apparently from the chief Church of the town.