How to set and get a parent class attribute from an inherited class in Python?

I have the Family and its inherited Person classes. How do I get the familyName attribute from the Person class?

class Family(object):
    def __init__(self, familyName):
        self.familyName = familyName

class Person(Family):
    def __init__(self, personName):
        self.personName = personName

For instance, let these Family and Person objects:

strauss = Family('Strauss')
johaness = Person('Johaness')
richard = Person('Richard')

I'd like to do something such as:

print richard.familyName

and get 'Strauss'. How can I do this?