Changing the author on a WordPress blog is a fairly straightforward process. You’ll first need to open up the blog’s main page (usually located at blog.domain.com) and click on the “Settings” link in the upper-right corner of the page.
From here, you’ll need to click on the “Posts” tab and then click on the “Author” link in the left column of thePosts screen. You’ll then be able to enter your new author’s name in the text field located at the top of the screen and click on the “Update Posts” button to save your changes. Finally, you’ll need to refresh your blog’s main page to see your new author information take effect.