Turtle WoW

I ended making a new account so for now this one will remain silent or until I figure out how to delete it.

Hello! Returning Turtle here, I was hoping to find out how I can find my in game account name? Wanted to come back to get ready for the custom expac but it seems ive forgotten what my in game account name was, already had to change my password due to not remembering, please help a stranded turtle!