I have a django model as follows:

class Person(models.Model):
    name = models.CharField(max_length=255)

class Relationship(models.Model):
    parent = models.ForeignKey(Person)
    child = models.ForeignKey(Person)
    description = models.TextField(blank=True)

In my view, I pass a certain person, and the relationships in which he/she is parent:

person = Person.objects.filter(name ='some name')
descendant_relationships = Relationship.objects.filter(parent = person)

An I want to show this person's descendants in a list in a template:

<ul>
{% for item in descendant_relationships%}
    <li> {{item.child.name}}  -  {{item.description}} </li>
{% endfor %}
</ul>

But this template code will not show the children of children (i.e. grandchildren, great-grandchildren etc.). How can I get these lower level descendants to show up? I imagine recursion is necessary somewhere, but where?