Displaying particular category for a child page in a single template

I have a single template that has if/elseif functions to display slightly different layout for certain pages. Here’s what the code in the template looks like right now:

<?php if (is_page('scholarship-program')) { ?>
<div class="clear"></div>
<div id="content_bg">
  <div id="content_wrap">
    <div id="content">
      <?php if ( have_posts() ) while ( have_posts() ) : the_post(); ?>
        <?php the_content(); ?>
      <?php endwhile; ?>
    </div>
    <!--end content-->
    <?php include ('sidebar-custom.php'); ?>
    <div class="clear"></div>
  </div>
  <!--end content wrap-->
</div>
<!--end content bg-->

<?php } elseif (is_page('our-blog-comments')) { ?>
<div id="content_wrap">
  <?php query_posts('category_name=main');
    while (have_posts()) : the_post();
      the_content();
    endwhile;
  ?>
</div>
<!--end content-->

<?php } else { ?>
<div id="content_wrap">
  <div id="content">
    <?php if ( have_posts() ) while ( have_posts() ) : the_post(); ?>
      <?php the_content(); ?>
    <?php endwhile; ?>
  </div>
  <!--end content-->
  <?php include ('sidebar-custom.php'); ?>
  <div class="clear"></div>
</div>
<!--end wrapper content-->
<?php } ?>

The problem I’m having is the “our-blog-comments” page. It’s a child page that I ideally want to display just one category called “Main.” I’m pulling my hair over this because it doesn’t filter out other categories and can’t get this to work! What am I missing?

Thanks in advance.