half-co-nephew-in-law

Spouse's half-nibling's husband.

half-co-nephew-in-law.

co-great-nephew-in-law

The grandson-in-law of one's spouse's sibling.

My co-great-nephew-in-law is a good person.

co-cousin-nephew-in-law

The grandson-in-law of one's parent-in-law's sibling.

My co-cousin-nephew-in-law is a good person.