Great-great-grandparent's parent.
My great-great-great-grandparent is a good person.
Great-great-grandparent's parent.
great-great-great-grandparent.
Great-great-great-grandparent's parent.
My great-great-great-great-grandparent is a good person.
Great-great-great-grandparent's parent.
great-great-great-great-grandparent.