For biographical information on authors, one source of information is Credo Reference, which provides online versions of 500+ published reference works from over 70 publishers, including biographical information sources.
Dictionary of Literary Biography Online provides more than 16,000 biographical and critical essays on the lives, works, and careers of the world's most influential literary figures from all eras and genres.
For best results, select Advanced Search and select the "Person-By or About" option in the first drop-down box. Then, search for your author (last name first or first name first - either will work).
Don't panic. You have several options available to you: