Adding text to bottom right of banner image

Site URL: http://www.chriswgladden.com

Hello,

I'm trying to add text to the bottom right of the banner photographs on the various pages of my site (www.chriswgladden.com). I've been trying to do this using spacers, but it won't align with the bottom and keeps messing up the rest of the text boxes on the page. The screenshot below shows an example of what I'm trying to achieve (I made this by adding text to a screenshot with Paint). If there was a way to easily place a text box on all banner images in that location, that would be great. 

Thank you in advance!

Excellent, that was perfect. And following the pattern let me duplicate it on the other banner photos too. Thank you so much!