Need to redirect Parent Taxonomy Term page to oldest child
So I figured this out, wasn't too complicated at all.  Use hook_menu. I didn't write my SQL using the Drupal DB API, but it works:

function ain_custom_menu() {


 $items = array();

  // Item1
  $items['taxonomy/term/218489'] = array(
    'title' =&gt; 'Title1',
    'page callback' =&gt; 'MYMODULE_find_newsletter',
    'page arguments' =&gt; array("218489"),
    'access callback' =&gt; TRUE,
    'type' =&gt; MENU_NORMAL_ITEM,
  );

  // Item2
  $items['taxonomy/term/218500'] = array(
    'title' =&gt; 'Title2',
    'page callback' =&gt; 'MYMODULE_find_newsletter',
    'page arguments' =&gt; array("218500"),
    'access callback' =&gt; TRUE,
    'type' =&gt; MENU_NORMAL_ITEM,
  );

  return $items;

}

function MYMODULE_find_newsletter($mytid) {
  $tid = db_query('SELECT max(tid) AS tid FROM taxonomy_term_hierarchy t1 
    JOIN field_data_field_pubissue t2 ON t1.tid = t2.field_pubissue_tid
    JOIN node t3 ON t2.entity_id = t3.nid
    WHERE t1.parent = '.$mytid.' AND t3.status = 1')-&gt;fetchField();
  $latest = is_numeric($tid) ? 'taxonomy/term/' . $tid : '&lt;front&gt;';
  drupal_goto($latest);
}