Do they have the same meaning? If not, please explain.

1) I could never have known.
2) I could have never known.

#TIA

Question

Do they have the same meaning? If not, please explain.

1) I could never have known. 
2) I could have never known.

#TIA

Answer

Same meaning, but the first is grammatically correct and the second is something you might hear in spoken English.

Answer

They have the same meaning. 
In my opinion #2 is more commonly used.