first step-cousin-nephew

1. The granddaughter of one's parent's stepsibling.
2. The stepgranddaughter of one's parent's sibling.
3. The granddaughter of one's stepparent's sibling.

My first step-cousin-nephew is a good person.

double-first cousin-nephew

Son of their maternal first cousin with the paternal first cousin or double-first cousin’s son.

My double-first cousin-nephew is a good person.

half-first cousin-nephew

Half-first cousin's son.

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

first great-cousin-nephew

First cousin's grandson.

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