The grandson-in-law of one's spouse's sibling.
My co-grandnephew-in-law is a good person.
Spouse's grandniece's husband.
My co-grandnephew-in-law is a good person.
Spouse's grandnibling's husband.
My co-grandnephew-in-law is a good person.
Spouse's grandnibling's husband.
co-grandnephew-in-law.
The son-in-law of one's grandparent-in-law's sibling.
My first co-cousin-uncle-in-law is a good person.
Spouse's half-sibling's husband.
My half-co-brother-in-law is a good person.
Spouse's half-sibling's husband.
half-co-brother-in-law.