Aurora ________________________________
Latin for "light" or "dawn", Aurora is her royal name given by her parents. It may be stated in the film that this was "because she filled their lives with sunshine" but its also fitting for this princess since dawn is the time when the sleeping world awakes. It's no accident that she falls asleep at dusk and awakes upon sunrise. Incidentally one may recall her "hair of sunshine gold" but her "lips that shame the red red rose" are more linked to her second name.
Briar Rose ________________________________
Briar Rose, a pseudonymn given by her fairy godmothers also has poetic meaning. The first word BRIAR, a mass of thorny plants obviously makes sense with the story's motif but a rose also has numerous conotations. Roses have represented love, beauty, virtue, femininity, and virginity hence why it is also a symbol of the Virgin Mary. But a briar rose is a thing of beauty surrounded by harsh thorny bramble -- much like Aurora herself in the castle surrounded by the forest of thorns.