If you want to change the author name in your blog powered by blogger. Then it is very easy. Just follow these steps and your blog’s author name will be changed.
1. Sign in to your blogger dashboard --> Template. Then backup/restore your template. After that download the xml file. For emergency case if you do anything wrong then you can restore your template after uploading this XML file.
2. After downloading go to Edit HTML --> proceed
3. Click on “expand widget templates”. Copy the code and paste in WordPad. After that, search for the following code
<span class='post-author vcard'>
4. Now replace <data:post.author/> of above code by your new author name. Now paste this code in the widget. See the preview .if everything ok then save it.
Now enjoy with new author name for the post.