co-uncle-in-law

Spouse's pibling's husband.

co-uncle-in-law.

first co-cousin-uncle-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.

step-co-uncle-in-law

Spouse's steppibling's husband.

My step-co-uncle-in-law is a good person.