register 4th footer 2011 child functions.php

//add a fourth footer widget area//

add_action( 'widgets_init', 'register_fourth_footer_widgets', 20 );

function register_fourth_footer_widgets() {

    register_sidebar( array(
        'name' => __( 'Footer Area Four', 'twentyeleven' ),
        'id' => 'sidebar-6',
        'description' => __( 'An optional widget area for your site footer', 'twentyeleven' ),
        'before_widget' => '<aside id="%1$s" class="widget %2$s">',
        'after_widget' => "</aside>",
        'before_title' => '<h3 class="widget-title">',
        'after_title' => '</h3>',
    ) );
}