You could create a custom block with Designer Content (http://www.concrete5.org/marketplace/addons/designer-content... ), add a WYSIWYG field and set some text as the default value (for now just put in something like "PAGE NAME GOES HERE").
After you've created the block, edit its controller.php file (in YOURSITE/blocks/your_block/controller.php) and find the "add" function, and change this:
After you've created the block, edit its controller.php file (in YOURSITE/blocks/your_block/controller.php) and find the "add" function, and change this:
...to this:
Then you can add that custom block to the Page Defaults so it appears on every new page by default.