2 occurrences across the corpus

Apostolic Fathers

Ignatius to the Smyrnaeans 3:26

I salute Alce my well-beloved, together with the incomparable Daphnus, and Eutechnus, and all by name.

NT Apocrypha/Pseudepigrapha

The Third Epistle to the Corinthians 1:3

Stephanus and the elders that are with him, even Daphnus and Eubulus and Theophilus and Zenon, unto Paul their brother eternal greeting in the Lord.