WordPress H1 Hack -
This allows you to change the H1 tag of the page without affecting the page name, title, and menu title of the page.

This has most commonly been used in the page.php file of the WordPress themes only, but can certainly be applied to any page that you would like the ability to set the h1 tag (or some cases, if you prefer, the h2 tag). Remember, it is recommended to set the default theme h2 tags displaying the header of the pages to H1 for an SEO advantage.  Read the full post.