great-great-great-grandfather
Great-great-grandparent's father.
My great-great-great-grandfather is a good person.
great-great-great-great-grandfather
Great-great-great-grandparent's father.
My great-great-great-great-grandfather is a good person.
great-great-great-grandfather-in-law
Spouse's great-great-great-grandfather.
My great-great-great-grandfather-in-law is a good person.