Table of form rows not displaying many of the fields

I am trying to display a form (as a table of rows). I have the table itself displaying and the "Weights" column showing, but none of the other fields/columns are displaying any content. When I look during debug the form structure seems to be filled with data OK. This is a conversion from a D6 form of the statspro module (which I have never seen, so I cannot be 100% sure that it worked in D6)

function statspro_path_aggregator_list_form($form) {
  $result = db_query('SELECT
        n.spaid, n.name, n.weight
      FROM {statspro_path_aggregator} n
      ORDER BY n.weight,
        n.name,
        n.spaid');
  $form = array('#theme' => 'statspro_path_aggregator_list_form');

  $edit = t('Edit');
  $delete = t('Delete');
  foreach ($result as $row) {
    $spaid = (int) $row->spaid;
    $element = _statspro_form_field_name('aggregator', $spaid);
    $form[$element] = array('#type' => 'fieldset');
    $subelement = _statspro_form_field_name('spaid', $spaid);
    $form[$element][$subelement] = array(
      '#title' => (int) $row->spaid,
      '#type' => 'item',
    );
    $subelement = _statspro_form_field_name('name', $spaid);
    $form[$element][$subelement] = array(
      '#title' => $row->name,
      '#type' => 'item',
    );
    $subelement = _statspro_form_field_name('weight', $spaid);
    $form[$element][$subelement] = array(
      '#type' => 'weight',
      '#title' => t('Weight'),
      '#default_value' => (int) $row->weight,
    );
    $form[$element]['edit'] = array(
      '#type' => 'markup',
      '#value' => sprintf(
        "<a href='/%s/%u'>%s</a>",
        'admin/config/statspro/path_aggregator/edit',
        $spaid,
        $edit
      ),
    );
    $form[$element]['delete'] = array(
      '#type' => 'markup',
      '#value' => sprintf(
        "<a href='/%s/%u'>%s</a>",
        'admin/config/statspro/path_aggregator/delete',
        $spaid,
        $delete
      ),
    );
  }

  $form['submit'] = array(
    '#type' => 'submit',
    '#value' => t('Submit'),
  );

  $form['cancel'] = array(
    '#value' => sprintf(
      "<a href='/%s'>%s</a>",
      'admin/config/statspro/path_aggregator/list',
      t('Cancel')
    ),
  );

  return $form;
}

Thanks!