If you want to change your theme’s author link to another page, Justin Tadlock has a simple solution. If you have a single author blog, add this to your function.php file (in your child theme of course):

add_filter( 'author_link', 'my_author_link' );
function my_author_link() {
return home_url( 'about' );
}

Just change about to whatever page you want to use. I added this to my site and it changed the link from:

http://www.kmarsden.com/author/kevin

to

http://www.kmarsden.com/about