How to change hidden copyright name

So I recently downloaded and installed a WP theme for my website, but after getting everything done, I found the copyright name has the theme maker’s name next to mine. I want to remove it but cannot find the usual Footnote widget or code to do so. Any suggestions? It’s not unusual to have the maker’s name in the original footnote copyright notice, but you can usually change it with ease. There is no requirement for me to display their name, in the license.