post id & subheading

any way i can get the subheading of a page to pull using the following?

<?php
if (is_page( )) {

$page = $post->ID;

if ($post->post_parent) {
$page = $post->post_parent;
}

$children= wp_list_pages( 'echo=0&depth=1&child_of=' . $page .  '&title_li=' ) ;

if ($children) {
$output = wp_list_pages ('echo=0&depth=1&child_of=' . $page . '&title_li=');
  }

}
echo $output; 

?>

Trying to get a name(the post id) to pull to a navigation and the subheading of their professional title. I’m able to get the page heading just fine but not the sub header…Using the SubHeading plug-in

thanks for any help.

kmaier