1. The husband of one's grandparent's sister.
2. The brother of one's grandparent-in-law.
My granduncle-in-law is a good person.
Spouse's grandpibling's husband.
My co-granduncle-in-law is a good person.
Spouse's stepgrandpibling's husband.
step-co-granduncle-in-law.
Spouse's great-grandaunt's husband.
My co-great-granduncle-in-law is a good person.
Spouse's great-grandpibling's husband.
My co-great-granduncle-in-law is a good person.
Spouse's great-great-grandaunt's husband.
My co-great-great-granduncle-in-law is a good person.
Spouse's great-great-grandpibling's husband.
My co-great-great-granduncle-in-law is a good person.