In my experience in the United States
Noel is pronounced almost the same as knoll and is a guy's name, as such it is generally changed to
Noelle just to make sure people understand that it is a girls name.
Rene is also generally accepted as a guys name in my experience but I have met a couple of girls without the second e that girls tend to have in the US.
Back in 1775
My Marine Corps came alive
First there came the color gold
To show the world that we are bold
Then there came the color red
To show the world the blood we shed
OOH RAH
Semper
Fidelis