I am just discovering this now, but some photos I took in 2012 and 2013 show Todd Materazzi as author. There are some sports photos I took at UNM and travel photos in Utah. I never noticed this until I started organizing old photos and someone pointed out his name showed up when displaying on ZenFoto. Then i went to Bridge and noticed this as well. Funny, never occured to look at who was the author since I know I took all the photos. I even show up under differnt variation of my name sometimes.
Wasn't so easy but got it fixed. After doing what you said the other name still showed up even though I am shown as the author. I went to properties and under details and the other guy's name was in the comments section (It did show me as the author). I deleted the comment and when tried to upload Zenfolio showed an error message - corrupt file. I tried renaming the file and uploaded the renamed file and it worked, his name was not there. I just have no idea how this other persons name showed up as author and in the comments part under details when checking file properties.