Sentence:  Now when the greetings were done and the strains of the lutes and recorders sighed and lost themselves in the shadowy vault of the roof, the cup-bearers did fill great gems made in form of cups with ancient wine, and the Demons caroused to Lord Juss deep draughts in honour of this day of his <WSD>nativity</WSD>. 
Meaning of the word marked with <WSD> tags:  Someone's birth; the place, time and circumstances of a birth. (from 14th c.)