nephew-in-law

1- Nibling's husband.
2- Spouse's nephew.

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.

nephew-by-marriage-in-law

Spouse's nibling's husband.

My nephew-by-marriage-in-law is a good person.

great-nephew-in-law

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

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