wdlyons on "Displaying output from one table based on the info of another"

This has been driving me crazy!!!

I am creating a small plugin with two tables"

table1

id
first_name
family_name
date_of_birth
family_id
post_id father_id
mother_id
sex

and

table2

id
person_id
spouse_id
date_of_marriage
marriage_id

My question is this

How do i display a table of spouses?

ie grab the first_name, family_name for spouse one and the first_name, familyname of spouse2 from table1 and the date_of_marriage from table2 based on the person_id and spouse_id of table2.

I can get the table to display one spouse member but not the other:

I would like the output table to have the following headings:

Spouse 1 Marriage Date Spouse 2

First Name Family Name Date of Marriage First Name Family Name

The code I have tried is:

include ('tablename.php'); // This contains the names of the tables

$result = $wpdb->get_results( "SELECT $table_name.first_name, $table_name.family_name,           $table_name.sex, $table_name.post_id,  $table_name2.date_of_marriage,  $table_name2.person_id, $table_name2.spouse_id, $table_name2.marriage_id FROM $table_name JOIN $table_name2 ON $table_name.id=$table_name2.person_id ORDER BY '$table_name2.id ASC'" );

$spouse_id  = $wpdb->get_var( "SELECT spouse_id FROM $table_name2 WHERE person_id = $id" );
$marriage_id  = $wpdb->get_var( "SELECT marriage_id FROM $table_name2 WHERE person_id = id and spouse_id = $spouse_id" );

?>

<th class="menu_heading">
First Name</th>
<th class="menu_heading">
Family Name</th>
<th class="menu_heading small">
Edit Wife</th>
<th class="menu_heading">
Marriage</th>
<th class="menu_heading small">
Edit Date</th>
<th class="menu_heading small">
Delete</th>

<tr>
<?php
// Loop through the results to display the obtained information
foreach ($result as $result){

?>
<tr class="menu_list">

<td ><?php echo $result->first_name;?></td>
<td ><?php echo $result->family_name;?></td>
<td ><?php echo $result->marriage_date;?></td>

</tr>
<?php
}
>
</tr>
</table>

<?php
}
?>

Any Assistance is appreciated

Thanks