neilgee

This plugin will display the name of the WordPress Template in use for the current page at the bottom of the page. It will only show in the front end when you are logged in. Just deactivate the plugin when you find which template you need to adjust.
<h3>Usage</h3>
Just activate the plugin and when logged in as an Admin look at the front end view of a WordPress theme, look at the bottom of the page to see which WordPress template the current theme is using.

Which Template Am I

Works like a charm, thanks for the plugin.

Great plugin

This plugin will display the name of the WordPress Template in use for the current page at in the footer. It only shows for logged in administrators.

thewebist

A widget for displaying a list of subpage links. The list remains consistent regardless of where you are in the hierarchy.
Other features include:
<ul>
<li>Widget displays only on pages with subpages or on subpages.</li>
<li>List title is a link to the main page parent.</li>
<li>You can specify the link text for the list title, or you can completely hide it.</li>
<li>Sort subpages by Menu Order or Page Title.</li>
<li>Specify the depth of pages shown (all in hierarchy, all in flat list, 1 level, 2 levels, etc.)</li>
<li>Presentation utilizes minimal markup to allow for easy styling via your theme’s CSS.</li>
</ul>

WenderHost Subpages Widget

A widget for displaying a list of subpage links. The list remains consistent regardless of where you are in the hierarchy.

Which Template Am I vs WenderHost Subpages Widget