Sometimes if you have multiple authors, someone besides the one who actually wrote the blog post is the one publishing it. This could lead to misleading post categorization if visitors are trying to find posts by a specific author. Thankfully WordPress allows you to change who a post is “published” by.
Changing the author in the post editor
First make sure the post author meta box is displayed by clicking Screen Options and making sure Author is selected.
Then scroll down to the Author meta box and select the desired author from the dropdown menu.
Then click Publish.
Changing the author in the quick editor
You can also change the post author in quick edit by clicking Click Edit.
And then click on the desired author.