Given name is used for First Name or sometimes called Forename.
Michael Lee Stills
[Given, Forename, First] [Middle] [Surname, Last Name, Family Name]
I understand that some names, such as those in Dutch, a Given name can be two names and many people have multiple names which are generally relegated to middle names after the first name.
Related. When someone has multiple middle names, I use a comma between them but this now shows up as an error. I believe I am to check this off as a false error?