Venus was the Roman goddess of love, but only to educated Romans. The illiterate 90% of the populace simply called the planet Venus, the dawn star, "Lucifer".
That "Lucifer" means "Satan" is a "lay" concept drawn from a passage in the Old Testament referring to the fall of Babylon, metaphorically, as the fall of the morning star. But "Satan" itself is never referred to directly as "Lucifer" and every time the word appears in the Bible, it means "morning star".
So Dawnstar is Lucifer

I've known the previous information for a long time. I just didn't put 2+2 together to equal 4. Metaphorically speaking. Didn't come to me until I was doing all the quests in Dawnstar today. I'll spare the spoilers.

