1. The grandson-in-law of one's sibling.
2. The grandson of one's spouse's sibling.
My grandnephew-in-law is a good person.
1- Grandniece's husband.
2- Spouse's grandnephew.
My grandnephew-in-law is a good person.
1- Grandnibling's husband.
2- Spouse's grandnephew.
My grandnephew-in-law is a good person.
1- Grandnibling's husband.
2- Spouse's grandnephew.
grandnephew-in-law.
Spouse's great-great-grandniece's husband.
My co-great-great-grandnephew-in-law is a good person.
Spouse's great-great-grandnibling's husband.
My co-great-great-grandnephew-in-law is a good person.
The grandson-in-law of one's spouse's sibling.
My co-grandnephew-in-law is a good person.