RossMitchell on "Moving sliders"

Copy the file header.php from your parent theme into your child theme.

In your functions.php register a new widget, (use the parent theme as a template). call it like "sidebar-hdr"

Edit the child theme header.php, after the div with id="logo", add a block like this:

<div id="hdr-sidebar" class="hdr-sidebar widget-area" role="complementary">
		<?php dynamic_sidebar( 'sidebar-hdr' ); ?>
	</div><!-- #hdr-sidebar -->

Then in the Dashboard > Appearance > Widgets, add a text widget to the hdr widget area, add your text here.

Add custom css to style the new text.