Hi, Rusty!
Yes, I got 20a right away thanks to the similarity of the previously given clue!
Yes "ne/ nee " are French.
Both are in Chambers.
Now that is interesting about what Malone says about "ne" meaning the name originally given to a titled man.
Yes, it does say that in Chambers........I didn't read it properly ( sorry , Malone!)
However, .....it doesn't give that definition of "ne" in my French dictionary!
But indicates male or female usage of "ne (e)".
Perhaps Pigale will help us out here?