Lloth/Lolth/Llolth has an interesting variation in the number and location of "l"s in her name, I notice.

Even in the books. It's weird. I think "Lloth" is the real one but I'm never sure.

Lloth is the name bestowed upon Her by the Drow, Lolth is what the rest of the Forgotten Realms refer to Her as.

OHHHH. That makes much more sense now! I thought the authors just couldn't read properly!