In
Dutch, the -e at the ends of words is pronounced. So
Anne Frank would have sounded like UHnnuh - two syllables, not one.
And names like
Juliana do not consist of
Julie +
Anna. In Latin,
Julius is masculine and
Julia is feminine; Julianus (masculine) means 'Related to
Julius', 'Connected somehow with
Julius' or even 'Owned at one time by
Julius'! And
Juliana is the feminine form of that, in the usual way.
Marianna could be an exception;
Brianna wouldn't. It is sometimes written as
Briana anyway.