great-great-grandfather-in-law
The great-great-grandfather of one's spouse.
My great-great-grandfather-in-law 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.
grandfather-in-law
A grandfather of one's spouse.
My grandfather-in-law is a good person.
great-grandfather-in-law
The great-grandfather of one's spouse.
My great-grandfather-in-law is a good person.