The solution thanks to the guiding hand of MichaelH:
<div id="sidebar-left">
<ul>
<li id="parent-page">About</li>
<?php
if($post->post_parent)
$pages = get_pages('title_li=&child_of='.$post->post_parent.'&sort_column=post_date&sort_order=desc&echo=0');
else
$pages = get_pages('title_li=&child_of='.$post->ID.'&sort_column=post_date&sort_order=desc&echo=0');
$count = 0;
foreach($pages as $page)
{
$content = $page->post_content;
if(!$content)
continue;
if($count >= 2)
break;
$count++;
$content = apply_filters('the_content', $content);
?>
<li id="pages"><a href="<?php echo get_page_link($page->ID) ?>"><?php echo $page->post_title ?></a></li>
<li class="sub-list"><?php echo get_post_meta($page->ID,'listdesc',true); ?></li>
<?php
}
?>
</ul>
</div>
This will display the child pages and the custom field on both the parent page and all child pages. Nice! Much appreciated! You guys are great.