According to the story there was a fir tree in Eden that died when Eve ate the apple, and flowered again at the Nativity. And Stanley, with his German family connections, European sensibility, and wide voracious reading, must have come across the legend of Count Otto, called "Sone Heart" by his subjects because he never loved a woman, until he met the supernaturally beautiful Queen of the Fairies. She became his consort, and brought as her dowry a Christmas tree hung with gems and golden daggers, and said that she would be his just as long as he never uttered the word "death," which wasn't long.
this is an excerpt from "Kubrick" a biograph