$category = Mage::registry('current_category');
$it = 10;
if ($category) {
    while($category->getLevel() != 2 && $it > 0) {
        $category = $category->getParentCategory();
        if (!$category) {
           break;
        }
    }

    if ($category) {
        echo $category->getName();
    } else {
        echo 'Cannot find parent category';
    }
}