In the mla style if you reference name in text must also list it again inthe parenthetical citation?

Yes, in mla style if you reference a name in the text, you must also list it again in the parenthetical citation. For example, if you are referencing a book by Mary Shelley, you would write:

(Shelley 65)

in the text, and then include a full citation for the book in your Works Cited list:

Shelley, Mary. Frankenstein. 1818. New York: W.W. Norton & Company, 1992.

This will help your reader to easily find the source of your information.