Your tribute page is looking great! Some space between the image and first paragraph would be nice.
I looked over your code and I'm not quite sure what all your row and column divs are all about. You might want to read over the grid section of the bootstrap docs to become more familiar with how and when to use grids. http://getbootstrap.com/css/#grid
For centering text and images on a page, check out the text-center and center-block bootstrap classes.