I have created a Blog page and changed the attribute to Full Page,
But on the site, it still shows, the original wording before you place a widget in there.
I want the whole page to have no sidebar at all.
ah… understandable…many people request WordPress would have that ability when it comes to choosing a layout for a blog. Unfortunately that doesn’t work which is why a theme developer has to code that in as a theme option outside of the core WP functionality of choosing templates. But what is important here is that you got it working 🙂