If you are running Windows look at the file properties in the Windows Explorer right-button menu. There should be a PDF tab in the properties window and it will list some of the meta-data including title, author, subject and keywords.
Windows will display the file name and even if you change it this will not change the internal PDF title that Calibre and other tools use. As sabredog suggests try altering the title and author within the Calibre conversion window as you convert the document, I believe you will have to use individual rather than batch conversion to do this.
Note that PDF security controls include the ability to restrict changing meta-data so depending on how the document was created this might cause a problem. You can check secuirty settings on a PDF document by opening it is Adobe Reader, selecting "Properties" from the file menu and then the "Security" tab to list the settings.