mkimitch

Very helpful, thanks!

Thanks Otto! I forgot that STC included multiple plugins that needed to be activated!

I take that back… it didn’t bite me in the butt.

This is what I’ve used to accomplish what I think you are describing. Hope it helps!

<?php
if ($post->post_parent) {
	//get the parrent and see if it'a a top page (has no parent)
	$parent = get_page($post->post_parent);
	if ($parent->post_parent) {
		//if it's not a top page, then his parent should be
		$children = wp_list_pages('title_li=&child_of=' . $parent->post_parent . '&echo=0');
	} else {
		$children = wp_list_pages('title_li=&child_of=' . $post->post_parent . '&echo=0');
	}
} else {
	$children = wp_list_pages('title_li=&child_of=' . $post->ID . '&echo=0');
}
if ($children) { ?>
	<ul class="side-nav">
	<?php
		if ($post->ancestors[1]) {
			$ancestor_title = get_the_title($post->ancestors[1]);
			$ancestor_link = get_permalink($post->ancestors[1]);
		?>
		<li><a href="<?php echo $ancestor_link; ?>"><?php echo $ancestor_title; ?></a></li>
		<?php } elseif ($post->post_parent) {
			$parent_title = get_the_title($post->post_parent);
			$parent_link = get_permalink($post->post_parent);
		?>
		<li><a href="<?php echo $parent_link; ?>"><?php echo $parent_title; ?></a></li>
		<?php } else { ?>
		<li class="current_page_item"><a href="<?php echo get_permalink(); ?>"><?php the_title(); ?></a></li>
		<?php } echo $children;?>
	</ul>
<?php } ?>