The poem title is taken from the Odes and Carmen Saeculare of Horace, Book 2, Number 4:
Ne sit ancillae tibi amor pudori,
Xanthia Phoecu, prius insolentem
Serva Briseis niveo colore
movit Achillem …..
Do not be ashamed of your passion for a servant girl,
Xanthias of Phocis, in days gone by
the slave girl Briseis with the snow white complexion
excited the passion of haughty Achilles …..
Another poem with a similarly borrowed title was written by Robert Louis Stevenson – Ne sit ancillae tibi amor pudor