Filtering one most recent record per category

I have a list field titled "category", with three selections. I would like to show the ONE newest entry from each of the three categories on a page.

I can't use the following, because it returns only a record in the category with the most recent entry. Changing the 'limit' to 3, I get the three most recent entries, which can end up being all in the same category.

---

Header:
<?php
require_once "/home/looks/public_html/cmsAdmin/lib/viewer_functions.php";
list($blogRecords, $blogMetaData) = getRecords(array(
'tableName' => 'blog',
'limit' => 1,
'orderBy' => 'date',
));
?>



Viewer section of page:

<?php foreach ($blogRecords as $record): ?>
<?php if ($record['category'] != "category-one") { continue; } ?>
<?php echo $record['title'] ?>
<?php echo $record['summary'] ?>
<a href="<?php echo $record['_link'] ?>">more</a>
<?php endforeach ?>

<?php foreach ($blogRecords as $record): ?>
<?php if ($record['category'] != "category-two") { continue; } ?>
<?php echo $record['title'] ?>
<?php echo $record['summary'] ?>
<a href="<?php echo $record['_link'] ?>">more</a>
<?php endforeach ?>

<?php foreach ($blogRecords as $record): ?>
<?php if ($record['category'] != "category-three") { continue; } ?>
<?php echo $record['title'] ?>
<?php echo $record['summary'] ?>
<a href="<?php echo $record['_link'] ?>">more</a>
<?php endforeach ?>

---

Is this possible?

Thanks, Deborah