He never told her his name was Kal-El and she always called him Superman. Even Clark didn't know his Kryptonian name was Kal-El until "The Foundling." This was the episode where Lex discovered a lot about Superman, including his real name (I think).

So, no, we never saw her find out about his birth name. Or, if she did, it was so uneventful and unimportant that I've forgotten about it wink .

Fanfic | MVs

Clark: "Lois? She's bossy. She's stuck up, she's rude... I can't stand her."
Lana: "The best ones always start that way."

"And you already know. Yeah, you already know how this will end." - DeVotchKa