Rand had a very negative view of the history of philosophy. She did praise the Renaissance, but other than making a few general claims about it, never discussed any Renaissance thinkers in detail (or even at all from what I can tell).
Starting with Leonard Peikoff, Objectivists have argued that the Enlightenment was actually the West's rebirth of reason. Some even argue that it was "essentially Aristotelian." If you consult The Ayn Rand Lexicon, all of the entries for "Enlightenment" are from Peikoff's Ominous Parallels.