URGENT: How to remove just the Author Name from footer theme credit

I created a child theme and ignorantly put in my Wordpress author name. Now it shows at the footer. I want the Theme to show, but NOT MY WORDPRESS NAME. I don't think I can change it without again creating a new child theme and rebuilding the site. How can I hide just the "by wordenabode" on the footer? The site is suffernation.com I tried: site-details .theme-author { display: none; } But it did not work