second great-great-cousin-nephew

Second cousin's great-grandson.

My second great-great-cousin-nephew is a good person.

half-first great-cousin-nephew

Half-first cousin’s grandson.

My half-first great-cousin-nephew is a good person.

half-first cousin-nephew

Half-first cousin's son.

My half-first cousin-nephew is a good boy.

half-great-cousin-nephew

Half-first cousin’s grandson.

My half-great-cousin-nephew is a good person.

step-cousin-nephew

1. The grandson of one's parent's stepsibling.
2. The stepgrandson of one's parent's sibling.
3. The grandson of one's stepparent's sibling.

My step-cousin-nephew is a good person.

third cousin-nephew

Third cousin's son.

My third cousin-nephew is a good person.

third great-cousin-nephew

Third cousin's grandson.

My third great-cousin-nephew is a good person.