You could get away with Bathsheba, who comes up at least in fiction as recently as Zoe Heller.

[Cheating shamelessly] Mary, Martha, Lazarus and Bethany (can't think of any other place names that would work, sadly).

Jemima and Kezia are OK, but Keren-happuch isn't, and anyway you'd need a fourth.

Four female disciples named in the epistles: Lydia, Junia, Lois and Eunice?